The background
iD Mobile launched in 2015 and uses Three’s network. It provides its own billing and account support. Network sharing does not mean every Three feature appears on iD plans.
How the service reaches you
Three host network. A host network supplies radio connectivity; the brand determines the customer agreement. Coverage maps estimate conditions, while building materials, congestion and device capability affect the connection you actually experience.
Read the arrangement
SIM-only, handset and PAYG routes have different conditions. Data Rollover is a defined feature with rules about when unused data expires; it is not an indefinite savings pot.
SIM and eSIM
iD provides eSIM support for eligible arrangements and devices. Confirm the exact activation or replacement route and retain access to verification during the move.
The account companion
iD Mobile app is the place to review usage and account settings. Install the genuine app from the provider’s linked store listing. We never need your password, verification code or payment details to explain a general question.
Travel checks
iD publishes an inclusive destination list and fair-use rules. Check those entries for the exact country and type of use, rather than relying on a regional description.
Bills, renewals and changes
Place your contract summary next to your latest statement. Identify airtime, any handset repayment, extra usage and subscriptions. Ask the provider to explain anything unfamiliar before changing payment arrangements. Read the date and amount of any scheduled annual adjustment in your own contract.
Coverage and common interruptions
First establish whether calls, texts or data are affected. Compare indoors and outdoors, check the official service status, restart the phone and inspect the selected SIM for mobile data. Persistent trouble needs the provider’s technical support; we cannot access or repair the network.
Switching, stopping or upgrading
Keeping a number, replacing a SIM and ending a contract are different actions. Request account-specific early termination and device-balance information before deciding. Use a PAC to move a number; do not cancel the old line first without discussing the sequence with the receiving provider.
Questions worth taking to the provider
Which agreement am I reading? What remains payable if I leave? Is my handset supported for voice over 4G and Wi-Fi calling? Does this exact plan support my destination and SIM format? What changes after the minimum term? Record the answers and the date for future reference.
Before you act
Confirm current details directly with the official provider. Our information is independent, general and free of a guidance fee. We do not sell or arrange services.
The official reading list