Three Promo Codes – Verified Deals & Offers | September 2026
Save on iPhone contracts, Samsung Galaxy contracts with 16 manually verified Three offers, updated for September 2026. Browse the latest Promo Codes, working discounts, and exclusive deals, with expired offers removed regularly.
Three offers 4 coupon codes and 12 deals as of September 2026. Today's top offer: Catch 10% Discount on All Your Purchases. Codes are verified and updated daily.
Get 20% off your favorite iPhone contracts. Stay connected with great savings.
Enjoy 15% off your purchase sitewide, save on all items, discover great deals, and shop your favorites while spending less today.
Enjoy savings with 10% discount applied across all purchases, making shopping more affordable on your favorite products and essentials now
Protect your Samsung Z Flip4 with this magnetic full-coverage flip case featuring a convenient built-in pen
Protect your 10.9-inch iPad with a rotating case designed for flexible viewing and everyday use.
Enjoy immersive sound and advanced noise cancellation with Huawei FreeBuds Pro 2 headphones, available for $234.47 at Three.
Upgrade your iPad 10th Gen 10.9 2022 with a stylish rotating leather case priced at $27.72.
Protect your Samsung S23 with the Rhombic Leather Case, featuring stylish design, durable protection, secure grip, and convenient ring holder.
Boost your cart strength with 16% savings and elevate your shopping routine.
Empower your collection with 10% discount and improve your cart value effortlessly.
Claim 14% savings to gain extra perks and elevate your checkout experience.
Get 10% off to improve checkout flow and enrich your shopping experience.
Secure 15% savings to uplift cart value and enhance reward potential.
Enjoy a higher value shopping experience with 20% off and maximize cart benefits.
Claim 16% off to raise rewards and improve cart efficiency instantly.
Customer Reviews
Consistently reliable service
This is my third contract with Three, and they've been consistently good. I just upgraded my old iPhone contract to a new one, keeping my number was seamless like before. Delivery was on time, around 3 days, same as my last order. Their network coverage for 5G is solid in my city, and I've never really had issues. That's why I keep coming back, they just get it right without any fuss.
Good plan, delivery was ok
I got the Samsung Galaxy S23 contract. The monthly price was competitive, and the unlimited data is a big plus for me. Delivery took 4 days to get to my place in Ohio, which was fine, but not super fast. Customer service was helpful when I called about tracking my order, so that was good. Overall a solid experience, but I wish delivery could be a bit quicker sometimes.
Good value for a first-timer
I was looking for a new phone and saw the deal on a Google Pixel contract. The monthly cost was a lot better than other providers I checked, especially for the amount of data included. I signed up as a new customer and felt like I got a really fair price without having to hunt for too many discounts. Delivery was about 5 days, which is standard. For my first purchase with them, it felt like good value for money, definitely worth it.
Detailed thoughts on my SIM only plan
I decided to switch to a SIM only plan with Unlimited Data after my old contract ended. The ordering process online was straightforward, though the website felt a little busy at times. I received the SIM card in 3 business days, which was pretty quick. Activating it was easy, just popped it in my old phone. I had a small question about international roaming, so I used their online chat support. The agent was polite and resolved my query efficiently. The network coverage in my area (upstate New York) has been consistent, no dropped calls and data speeds are as advertised. For the price, this plan really delivers on its promises. No complaints about the quality of service so far, it just works.
Fast delivery, easy setup
Ordered a 5G Hub. Arrived in 2 days. Setup was simple, just plugged it in. Internet works great. No problems.
Three Community Discussion
Share tips, ask questions & help fellow shoppers save more
How long does it usually take for a new SIM or phone to arrive from Three in the US?
Anyone know if Three is better than O2 for 5G coverage? I'm in downtown LA and my current service is spotty.
I'm looking at their unlimited data SIMs. Is there a catch with 'unlimited' or can you really just use as much as you want without slowing down?
Can you use student discounts on top of other deals at Three? Like if they have a new customer offer, could I also apply my UNiDAYS code?
Are refurbished phones from Three legit? Good condition or a bit beat up?
Hey, thinking of getting a new iPhone contract from Three. Are their Black Friday deals usually any good, or should I just buy now?
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