Three Mobile Promo Codes for August 2026

Students heading back to school can get 10% off monthly payments for iPad contracts. Student verification applies.

Select Google Pixel handsets on contract are discounted up to 15% off the total device cost. The discount is applied at checkout.

Eligible NHS and Blue Light Card holders can save $10 per month on their contract plans. Verification through respective platforms is necessary.

Secure $7 off your monthly payment for 5G home broadband during the Boxing Day sales event. Offer valid for new broadband contracts.

Receive complimentary standard shipping on any order exceeding $50. This includes phones, accessories, and broadband devices.

Purchase an iPhone 15 on a new contract and receive a $5 reduction on your monthly payment. This applies to various iPhone 15 models.

New customers get half off their monthly bill for the initial six months on eligible SIM-only contracts. This offer applies to specific plan types.

Trade in your old mobile phone and receive up to $200 credit towards a new handset. Value depends on device condition and model.

During the Black Friday event, get 20% off the purchase price of specific refurbished phone models. Limited stock available.

Get a Samsung Galaxy Tab on a monthly contract starting at $20 per month. Pricing varies based on model and data plan selected.

First-time customers get an $8 reduction on their monthly bill for the initial three months on any pay monthly contract. This applies to new activations.

New sign-ups for unlimited data SIM-only plans receive a reduced rate of $25 per month for the first 12 months. Standard rates apply thereafter.

During the January sales, receive 5% off when purchasing select smart home device bundles. Discount applied automatically.

Verified students are eligible for a 10% discount on their monthly mobile phone plan. Valid student ID required for verification.

Refer a friend to Three, and both you and your friend will receive a $25 account credit. Friend must activate a new plan.