Compare iD Mobile vs. SMARTY Network

Features
Network Provider Three Three
Check network coverage: iD Mobile coverage SMARTY coverage
2G Network No No
2nd generation network. Max data speed of 0.3 Mb per second.
3G Network Yes Yes
3rd generation network. Max data speed of 42 Mbps.
4G Network Yes Yes
4th generation network. Max data speed of 1 Gbps (1000 Mb/s).
5G Network No No
5th generation network. Max data speed of 10 or 20 Gb/s.
WiFi Calling Yes Yes
Use Wi-Fi for mobile phone calls and texts when no network signal.
4G Calling (VoLTE) Yes Yes
Voice over LTE (4G Calling) makes clearer HD calls over 4G networks.
Data Rollover Yes No
Unused mobile data allowance rolled over from one month to the next.
Tethering Allowed Yes Yes
Tethering allows you to share your mobile internet with other devices.
Network Frequency Bands
5G (NR) Frequency 3500 MHz 3500 MHz
4G (LTE) Frequency 800 / 1500 / 1800 / 2100 MHz 800 / 1500 / 1800 / 2100 MHz
3G (UMTS) Frequency 2100 MHz 2100 MHz
2G (GSM) Frequency N/A MHz N/A MHz

iD Mobile is a mobile virtual network operator (MVNO) operating in the United Kingdom as iD Mobile Limited, using the Three network. It is owned by Carphone Warehouse and was launched on 12 May 2015.

iD only offers 4G pay-monthly contracts for 12 or 24 months (with a handset) , monthly 30-day rolling or Pay-as-you-go SIM-only deals.

SMARTY is a UK mobile virtual network operator running on the Three network. SMARTY offers SIM-only plans with no lengthy contracts or credit checks, and provides monthly discounts on unused data from previous months.