AT&T Store Diamond Bar Diamond Bar

Day of the WeekHours
Monday11:00 AM - 7:00 PM
Tuesday11:00 AM - 7:00 PM
Wednesday11:00 AM - 7:00 PM
Thursday11:00 AM - 7:00 PM
Friday11:00 AM - 7:00 PM
Saturday11:00 AM - 7:00 PM
Sunday11:00 AM - 6:00 PM
Due to precautions being taken to combat the COVID-19 virus store hours / availability may have been changed and may not be accurate. Please contact the store before visiting to verify location opening and hours of operation.
1257 S Diamond Bar Blvd
Diamond Bar, CA 91765
US
SHOP NOW
4.1 out of 5.0full starfull starfull starfull starempty star
(6 Reviews)
Map of 1257 S Diamond Bar Blvd in Diamond Bar

To continue helping keep our customers, employees, and communities safe, we’ve made a number of changes in our retail stores as a result of the coronavirus pandemic.

🠢    Masks are required to be worn by employees, customers and visitors in our stores and will be provided to customers who need them.

🠢    We’re now offering curbside service, touchless transactions, and in some markets, door-step service with a no-contact virtual set-up.

🠢    We’re also limiting the number of people in our stores to ensure social distancing and asking customers to first go online to handle some services like bill payments and device upgrades.

🠢    Hand sanitizer is available to our employees and customers, and surfaces are cleaned and sanitized at regular intervals throughout the workday.

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AT&T speed tops the charts! AT&T is Los Angeles's fastest wireless network.
With more people connecting with each other virtually than ever before, having fast wireless speeds is important. Whether you are connecting with family, friends or colleagues or downloading the latest movie, we’ve got you covered.
IT DOESN’T HURT TO CHECK
Find out your eligibility to get a new line on installment or BYOD, it won’t hurt your credit score!
Save More With Unlimited Your Way
Pick the perfect unlimited phone plan for each family member with Unlimited Your Way. From $35/mo. per line for 4 lines.

Special offers and new phones for Diamond Bar

  • AT&T iPhone 11

    SMARTPHONE DEALS

    AT&T has great deals on the latest phones like the iPhone SE, iPhone 11 & iPhone XR. Get your new iPhone with AT&T the fastest network for iPhone.
  • AT&T iPhone SE

    SMARTPHONE

    Learn how to get the new iPhone SE (2020) for $5/mo. Req's new line, qualifying installment with elig. unlimited plan.
  • AT&T Samsung Galaxy Note20 Ultra 5G

    SMARTPHONE

    Learn how to get the new powerful Samsung Galaxy Note20 Ultra 5G for $300 with trade-in. Req's elig. Unlimited plan, installment agmt and trade-in of elig. phone.
  • AT&T Right To You
    AT&T Right To You

    FREE PERSONAL DELIVERY

    Personal delivery. Expert setup. All free. Get delivery and expert setup as soon as today.
    AT&T Right To You℠ subject to availability. Select areas only.
  • AT&T PREPAID
    Prepaid phone plans in Diamond Bar

    Prepaid Phone Plans

    Learn how to get Unlimited Plus for $50/mo. when you open a new line on our $75/mo. plan and sign up for AutoPay. You’ll enjoy unlimited high-speed data while saving $25 each month. Time for a prepaid phone plan in Diamond Bar?
    50.00/mo.Plus taxes and fees with AutoPay
    After 22GB, AT&T may temporarily slow data speeds if the network is busy. Offer ends 10/29/20 in stores & 10/19/20 online. Excludes upgrades. First mo. svc. charge & taxes due at sale. In-store activ. fee is $15. Other restr’s may apply.
  • AT&T Prepaid + iPhone
    AT&T PREPAID iPhone SE (2020)

    SMARTPHONE

    Get the iPhone SE 64GB for $349.99 + $50 toward account. Limited time. Online only. First mo. svc. charge & applicable sales tax due at sale. Excludes upgrades. New customers will receive a $50 account credit after purchase and account activation. Other fees, charges & restr's apply.

About the Diamond Bar Store

Authorized Retailer
Our Services
  • Cell Phones
  • Wireless Plans and Setup
  • Phone Activations
  • Trade-In
  • Device Upgrade
  • Device Protection
  • Tablets
  • Wearables
  • TV & Entertainment
  • Internet
  • Bill Pay and Setup
  • Small Business Solutions
Our Services
  • Cell Phones
  • Wireless Plans and Setup
  • Phone Activations
  • Trade-In
  • Device Upgrade
  • Device Protection
  • Tablets
  • Wearables
  • TV & Entertainment
  • Internet
  • Bill Pay and Setup
  • Small Business Solutions
Our Location
Looking for the hottest new device or an awesome accessory? Our Diamond Bar Store location has got you covered. We’re your one-stop shop in Diamond Bar, CA. We have phones, tablets, wearables, and more that you’ll love. We also offer in-store activation, so you can get your device up and running in no time. Need a case? How about a charger? Some new headphones? We have all that—and more. And while you’re in the store, make sure to check out our DIRECTV® and AT&T TV NOW packages. They deliver the shows and movies people love talking about. So, now that you know us a little better, stop by our Diamond Bar, CA store located at 1257 S Diamond Bar Blvd! We’d love to get to know you.

Cellphones, plans & accessories

  • AT&T PREPAID

    Experience the freedom of AT&T PREPAID with plans that allow you to pay for usage in advance without tying you up in a long-term contract. Get unlimited talk & text in the U.S. and the data you need with no annual contract, no credit check, free shipping, and no activation fee for online orders. Shop AT&T prepaid phones for the premium brands you love or bring your own (BYOD) compatible device.
  • POPULAR SMARTPHONES

    When you are ready for a new iPhone or any new phone, AT&T makes it easy. You’ll find everything from the latest feature-rich smartphones to devices for mostly texting and calling. Choose from the most popular brands like Apple, Samsung, LG, and more. Order online and get free shipping, pick up at your nearest store, or get free same-day delivery in select ZIP codes.
  • ACCESSORIES

    AT&T has the accessories you need to style & protect your devices. Rugged phone cases & sleek phone covers, chargers & batteries to keep you powered up, and speakers, headphones & headsets to keep you connected to your favorite audio, and more. Get free shipping, free returns, and in-store pickup – just order online by 4pm and it’ll be ready within two hours.

What our customers are saying

  • 1 out of 5full starempty starempty starempty starempty star
    I have been AT&T Diamond Bar Store customer for 9 years. In December of 2019, I upgrade my service to $30 per line. However AT&T charged me $40 per line in two bill cycles. On 2/27/2020, I visited AT&T Diamond Bar store to question about the extra Charges. When I was waiting in the store , I noticed the front desk staff was explaining to the other customers in English with patient , polite and respectful manner . When he helped me with my matters, and he explained the reason of my bill overcharged , I was not Signing up for paperless statement, so that AT$T charge me over $10 for each line. He spoke To me in Mandarin. But he was in inpatient, rude, and reproached manners to communicate with me. I asked what was his name, he could not provide to me. When I requested to speak with his manager, he said he was the store manager. I felt the manager discriminated Chinese speakers even though he was native Chinese speaker.
    Response from AT&T
    Hello Qingxiu. Our number one goal is to provide you with an exceptional customer experience. We apologize that this was not the experience you had. Please visit us online at issues.mywirelessgroup.com or send us an email at support@mywirelessgroup.com so we can help further assist you. Your experience in our store matters to us, and we'll work to make sure the next experience is better.
  • 5 out of 5full starfull starfull starfull starfull star
    The data plan on my phone was blocked. The techician in charge at the store spend a good amount of time helping me to unblock the phone. I tried another store previously, but the employee was not so helpful. Also, I asked him about a buffering issue that frequently occurred when I watch live streaming on DirecTV Now. He said he will bring this issue up with the DirecTV Now rep next when he see them
  • 4 out of 5full starfull starfull starfull starempty star
    Everything was fine in the store, was shown the correct phone and all. However was told I was told my phone would arrive to me within 2 - 3 business days. It took 7 days to arrive to me. I needed it asap.
  • 5 out of 5full starfull starfull starfull starfull star
    The sales persons at this shop are really professional. They know how to help their customers.
  • 5 out of 5full starfull starfull starfull starfull star
    Very good customer service. Sales representative was very courteous and polite.

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