Best eSIM for United Kingdom

The main telecom providers for the United Kingdom are EE, Vodafone, Three, and 02.

✓ EE: EE is the largest telecom provider in the UK, with over 33 million customers. It was founded in 2010 and is owned by BT Group. It has the best mobile coverage and speeds in the UK, with download speeds of up to 200 Mbps and upload speeds of up to 100 Mbps. According to OpenSignal, EE has a 4G availability score of 93.9%, meaning that users in the UK can expect to have a 4G signal 93.9% of the time. EE also offers 5G coverage across the UK, with speeds of up to 1 Gbps.

✓ Vodafone: Vodafone is the second largest mobile network provider in the UK, with over 25 million customers. It was founded in 1991 and is the second largest mobile network provider in the UK. It has good mobile coverage and speeds, with download speeds of up to 150 Mbps and upload speeds of up to 70 Mbps. According to OpenSignal, Vodafone has a 4G availability score of 90.2%, meaning that users in the UK can expect to have a 4G signal 90.2% of the time. Vodafone also offers 5G coverage across the UK, with speeds of up to 600 Mbps.

✓ Three: Three is the third largest mobile network provider in the UK, with over 18 million customers. It was founded in 2003 and is the third largest mobile network provider in the UK. It has good mobile coverage and speeds, with download speeds of up to 120 Mbps and upload speeds of up to 50 Mbps. According to OpenSignal, Three has a 4G availability score of 89.2%, meaning that users in the UK can expect to have a 4G signal 89.2% of the time. Three also offers 5G coverage across the UK, with speeds of up to 300 Mbps.

✓ O2: O2 is the fourth largest mobile network provider in the UK, with over 22 million customers. It was founded in 2001 and is the fourth largest mobile network provider in the UK. It has good mobile coverage and speeds, with download speeds of up to 100 Mbps and upload speeds of up to 50 Mbps. According to OpenSignal, O2 has a 4G availability score of 88.9%, meaning that users in the UK can expect to have a 4G signal 88.9% of the time. O2 also offers 5G coverage across the UK, with speeds of up to 200 Mbps.

✓ MVNOs: In addition to the major mobile network providers, there are also a number of Mobile Virtual Network Operators (MVNOs) operating in the UK, such as Virgin Mobile, Tesco Mobile, Lycamobile, iD Mobile and Giffgaff. These providers offer competitively priced plans and generally run on one of the major mobile networks, offering similar coverage and speeds as the main providers.