I would like to recognize Siman R. and his protégée Dom L. at the T-Mobile location for delivering what has become increasingly rare today--authentic, professional, and customer-focused service. From the moment I walked in, Siman and Dom took the time to understand my needs, explain my options clearly, and help me upgrade my phones without any pressure or sales gimmicks. There was no bull, no unnecessary upselling, and no attempt to steer me toward products or services I didn't need. Instead, they focused on creating a true win-win experience. Their product knowledge was exceptional, and they helped me maximize the value of my upgrade by ensuring I benefited from promotions that included an Android smartwatch and a Harman Kardon portable Bluetooth speaker. More importantly, they patiently answered every question and made sure I fully understood my options before making any decisions. What stood out most was their professionalism, honesty, and genuine commitment to customer satisfaction. Siman clearly leads by example, and Dom is developing into an outstanding representative under his mentorship. Together, they represent the kind of team that builds long-term customer loyalty and trust. As a customer, I left feeling respected, informed, and confident that I had received the best possible service. That is not something I say lightly. If you're a T-Mobile customer looking for a seamless, straightforward, and genuinely enjoyable experience, I highly recommend seeking out Siman R. and Dom L. at the Ontario Mills T-Mobile store. They have earned my highest recommendation and a well-deserved five-star rating. Outstanding job, gentlemen. Thank you for proving that exceptional customer service is still alive and well read more

This T-Mobile store needs customer service training to including the manager Pedro. We spoke with on June 6th to start Internet service. We asked Pedro how much would the charge be for the full service Pedro stated $50 however customer service stated the charges are $65, this is not what we were told by Pedro. Pedro give miss information to ensure a sell, he did not provide us with the equipment that was required and after speaking with customer service on the phone and returning to the store for the 3rd time and speaking with Pedro regarding the miss communication and the information that he didn't provide me he became very dismissive and did not except accountability for his actions. Clarity was never at the store and poor management and customer service. read more

After getting the run around from T-Mobile at Colonies, multiple calls to T-Mobile customer service and getting NOWHERE, we went to T-Mobile on Haven. Amanda N. Was prompt to assist us, solved our issues, and handled us with five star service!! read more

so basically today I went in to get a new phone. The young Asian dude in the front was really rushing me to get his stupid deals and just stuff for extra money he wasn't helpful at all and continued to tell bullcrap instead of helping really bad experience I don't remember this store. read more

The manager Ethan at the Haven and 210 location is amazing! He is so kind and smart. He isn't your normal phone sales person. He doesn't just want to sell you. while I was in there, I was in there for probably two hours because I was having problems with my phone. I saw him help several people, including some elderly people having problems with their phones that have nothing to do with T-Mobile, but he literally handheld them just out of the kindness of his heart that wasn't even his job. The store has got to have the kindest employees I've ever seen. They're not just there to want to sell you but even when you do wanna buy something they're very sweet and knowledgeable. There's no pressure. I will definitely always go here shout out to Ethan and his staff. read more

First time I've been to this location. It was on my way to Bloomington and it was the closest to the freeway. I came in for a 5g home internet router. Damaris & Lucy helped me out. They set up my router quickly so that all i had to do was get home and plug it in. Service was quick and easy. Would definitely recommend this as a Tmobile stop. read more

T-Mobile Authorized Retailer - Store - Mobile Phones Near Me - Rancho Cucamonga, California

Went to upgrade my phone on 4/5. During my time in the store the " Tristin the manager" turned 2 customers away, for not having the products they needed in stock. When I told the sales agent "danm this store can't help anybody. Tristin got irate telling me to leave the store and threatening me. saying meet me at 5pm when I get off my shift if you want my help..?? THIS STORE IS TRASH. I will be changing couriers. read more

Very bad attitude. Do not come here. Not welcoming. Very rude. They should fire these people. If I can give zero stars, I would. The Upland office is great. Go there. read more

I came to T-mobile for the free tmobile tuesday giveaway as well as try their internet. If you are a magenta plan then the internet is $30 a month!!! Such a great deal. The lady who helped us was very nice. I regretfully forgot her name but everyone there seemed very helpful! read more

apenas entré nadie tomó la iniciativa de atenderme habían dos personas y las dos estaban atendiendo a un cliente ,espere un rato y me fui porque no me atendieron read more

The customer service was great. They gave me this snync up tracker and told me it was free, BUT ACTUALLY you have to pay $4 per month for the service, not the product, they gave me 3 of them so that's an extra $12 a month, and I couldn't cancel because I only realized it after their 14 day grace period. So the saleswoman lied, and her supervisor who is probably telling their associates to do that so they can get some commissions had her back when I tried to cancel. DO NOT GET THOSE DAMN SYNC-UP TRACKERS IT IS NOT FREE. I wouldn't be complaining on here if this wasn't the 2nd time a TMobile associate lied to me in 2 months, (about an IPAD) so make sure when you add ANY type of service with SHADY ASS Tmobile, to call customer service to see if they are not charging you EXTRA! All these hidden charges are why Tmobile is expanding so much and can pay all these associates! I wanna cancel but they lock you in with your phone installments. read more

T-Mobile Authorized Retailer - Mobile Phones Near Me - Rancho Cucamonga, California

Talk about Slow. And Un motivated. This specific location is mind blowing. Two employees on the floor... one customer.... It took a t mobile employee about 30 minutes to access my "file/ acct". Tell me the price to upgrade.... And since i was there.... A new screen protector since i paid for the replacement at any time deal.... Well. I guess t mobile isnt just t mobile because this location. After spending half an hour waiting for a bunch of employee to tablet input. Tells me i cant get it replaced at that store . You know because they're not a chain/ Corporation. thumbs down. Two of em. Way better store on foothill. With enthusiastic and ready to help employees. Just go there. ‍ read more

Brian or Ryan whatever his name is, the manager, should be embarrassed and ashamed. If you're a woman don't go in alone, he will upsell you!! Brought out 3 trackers, cause it was "a better deal" instead of bringing 1 now I had to pay a restocking fee cause he decided to speak for the customer and bring out 3. Unacceptable, no actual manager in the store to talk to when you have to deal with these guys. read more

My husband and I came in on Friday to upgrade our phones to the new iphone 15s. We got here around 3:30 PM when it was completely empty and Amber immediately helped us with finding the phones in the exact colors we wanted. She was also super helpful in helping my husband ship in his old phone as a trade in, and helping us transfer our entire phones to the new ones. The store was packed by 4 PM and there was quite a wait for the people who just got there, but all of the employees were helping people as fast as they could. Love this store and how convenient it is! read more

This store is awful the employees don't greet you when you come in and don't even acknowledge you when in the store. There were only two employees and no one else to help out. The service is bad and very slow. I had to call t-mobile to get my issue resolve because of the bad service. read more

Terrible service by Amber. Difficult to communicate with her and she's very loud and refused to lower the music. When I asked if someone else could help me, she started talking to a customer about me then asked me to leave. I'll be leaving TMobile. read more

Awful customer service. They forgot to put in our trade in devices and will not assume responsibility for extra costs. Do not come to this location. read more

The manager, Joseph, needs to be replaced. The young man had me come in to do a return and then said he needed to scan my receipt in order to make it happen. Well, I didn't have my receipt because I figured they have all the info in the system. Come to find out there isn't even anything on the paper receipt that is actually scannable. He's sexist and racist. Other than that, Carolina and Justin are nice people and helped with what was needed. read more

This is the best experience I have ever had with T-Mobil. Thanks to Damaris & Lucy!!!

I went to this T-Mobile store today to get a new I-Phone and was helped by Justin. He went above and beyond with his customer experience. Highly recommend this location! read more

Karl is a terrible manager..did not want to help because it was an online sale and not theirs..store was empty...literally empty..I can see why though read more

Terrible Service from Manager Justin, once they take your money the could care less about customer. They sold me a defective product and treated me like "so what" Avoid this location. This Manager should be terminated. Find another location or a new provider. Stay far away from this poor customer service place. read more

Came here yesterday to purchase my phones and bought some accessories. Awesome customer service from Rudy, he was very helpful in setting up all my phones and answering all the random questions I had. He was also able to help me order products that were not in store but they would be able to be delivered to my house. The wait was not so long either, as this store is kind of hidden away. I would recommend coming to this location if you want to have a great experience and I would ask for Rudy! Thank you! read more

Justin and Victoria were awesome Helped me with all my questions and made me more excited about choosing tmobile as my plan Thanks for all the knowledge in our q&a justin And thanks for being helpful Victoria Enjoy your day! read more

Wow I can't believe this I've been getting my service for 5 years and the way I was treated was horrible. I got treated horribly just by entering the store. My father was going to go return the internet modem, because it wasn't working. So he entered on his own and me and my mom sat in the car, but he was taking to long. So I decided to go inside and get the keys from my father to close the car, and me and my mother would sit inside. So me and my mother went and entered the store when we were attacked by the worker named Amber who started talking aggressively saying you guys can't keep entering because supposedly their is a tracker on the rug. But my mother felt like she was being attacked that everyone in the store started looking at us because of how aggressive and rude Amber was talking. She then noticed my mother was upset. So she goes well i'm sorry but their was another guy who walked in and out the store and she didn't say anything to him. T-mobile you NEED TO DO BETTER HIRING PEOPLE BECAUSE WORKERS LIKE AMBER RUIN THE BUSINESS!!! read more

Terrible customer service, they don't acknowledge people, we walked in before a customer but that person said he was there first so we just let it go, not once both representatives said "we'll be right with you", an hour went by until I had to approach them myself. When it was our turn, came to find out they didn't have the phone we wanted so they told us to just order online. read more

Although there were some problems during transactions (not their fault) Mathew And Kaitlyn were very helpful and easy going. Even though it took awhile it was a pleasant exhange. Thanks guys! JS read more

I have been here multiple times and have had great service always with Justin. he is helpful and personable and very knowledgeable. He makes an annoy situation like loosing a phone as best as it could be! read more

If I could leave a zero rating I would. I've been a T-Mobile customer for almost 20 years and the "customer service" or lack thereof was astounding. We were "helped" by the supposed manager, Joseph, who was the least communicative T-Mobile associate I've ever come across. He had us standing there for about an hour while he was apparently trying to get the card reader to work. Doesn't tell us he's having an issue for that entire time so we had no clue what was going on. After almost an hour he decides to tell us that it would go faster with cash, which we didn't have on hand and an ATM for our bank wasn't close by so that would've been an inconvenience for us. The bigger issue was that he never even mentioned it the entire time we were waiting. A little communication goes a long way. We ended up leaving without getting new phones as we planned. Very disappointed. Won't be coming back to this location. read more

super friendly service and reps were very knowledgeable about the products. Carolina was a supper big help! and would definitely recommend her for any of your needs ! will be going to this location from now on :) thank you guys ! read more

Very poor experience with Joseph. Came in for a new phone and Joseph said "we have a great promotion and you can get a FREE iPad". Free is not free. I specifically asked - so when I get my bill the only increase I will see is the financing of the phone. He said YES! that is not true at all. I even asked him when I saw the receipt - what is this new phone number for the iPad - am I getting charged for a new line? The response was - no, that is just a way to identify the device. Don't believe a thing they say - now I am getting an additional $30 on my bill for an iPad I didn't need in the first place. Get everything in writing. They are sales people and they tell you anything it takes to make a sale, even if it isn't true. read more

Don't shop at this location as it supposedly a "Franchise" store and does not have to follow any directions from T-Mobile. Worst service in my 20 years with T-Mobile and staff makes up stories not to service you. They said I was in a few days ago to check on my phone replacement when in fact I was 300 miles away but they insisted I was there. T-Mobile had sent a replacement phone to this location for me but they wouldn't give it to me even thought they were told to by T-Mobile customer service. If these are the kind of Franchisees and service that T-Mobile encourages, then I guess its time to switch carriers. read more

I visit this location in less than an hour for a problem with my cell phone. The person who helped me he actually very knowledgeable about the phone. I did not have a clue what's Going on. Franco was his name, nice guy. Vey attentive, and polite. read more

Victoria was super friendly and helpful!! She answered all the questions I had. Overall a positive and friendly environment. I will definitely be coming back :) thank you again Victoria! read more

Came inside the store for a new phone two days ago not knowing which device to purchase, until I came across Victoria she helped a lot and provide me info on each phone on the differences and the similarities which helped me a lot to decide on a phone that will be the best fit for me! read more

Shoutout the white boy who wanted to make me wait for paying my phone bill and thinking I was going to spit game at his co-worker so that made him quickly change his mind about providing me service then lol . Very poor customer service wouldn't recommend read more

My wife and I loved our experience here all the staff was helpful and even got us on a better plan than we were on and explained everything in detail to us. My second phone is due for an upgrade in 2 months I will definitely come back to this location when I get my next phone. Christopher was the one who helped us. read more

Experience with the manager is really bad. One of the worst. Lying to our face making us purchase something we don't need to purchase. We were making a big purchase and had to leave to get cash because their machine wasn't working. After talking to customer service we went back to get a refund on the item and the manager wouldn't give us cash back even though we paid cash. Talk to customer service again and they said they should've given us our cash back as we made the purchase in cash. read more

On my last trip to t-mobile Victoria was such a tremendous help on finding me a new phone. She was very respectful and very attentive. Huge shoutout to her! read more

Vicky was supper friendly and helpful! She Helped me figure out what phone and plan was best for me, thank you Vicky!!