Chattr is a UK-based mobile service provider that offers SIM-only and eSIM plans. The company uses O2’s network infrastructure, meaning customers get access to O2’s coverage and signal quality while purchasing their plan through Chattr instead of a major carrier. Their plans include unlimited UK minutes and texts, with customers choosing the data allowance that suits their needs.

The company promotes simple, flexible mobile service with no credit checks, making it easy for most people to sign up. They offer both physical SIM cards and eSIM options, depending on the customer’s device. Chattr also advertises a “Roam like at Home” feature across Europe Zones 1 and 2, as well as additional perks such as discounts with well-known retailers and access to O2 Priority benefits for certain plans.