Compare ASDA Mobile vs. Sky Mobile Network

Network Provider Vodafone O2
Check network coverage: ASDA Mobile coverage Sky Mobile coverage
2G Network Yes Yes
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 Yes Yes
5th generation network. Max data speed of 10 or 20 Gb/s.
WiFi Calling No Yes
Use Wi-Fi for mobile phone calls and texts when no network signal.
4G Calling (VoLTE) No Yes
Voice over LTE (4G Calling) makes clearer HD calls over 4G networks.
Data Rollover No Yes
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 / 900 / 1500 / 1800 / 2100 / 2600 MHz 800 / 900 / 1800 / 2100 / 2300 MHz
3G (UMTS) Frequency 900 / 2100 MHz 900 / 2100 MHz
2G (GSM) Frequency 900 MHz 900 MHz

Asda Mobile is a mobile virtual network operator (MVNO) in the United Kingdom, operated by ASDA on the Vodafone network.

In December 2013, ASDA Mobile switched from using Vodafone to running on the EE network for several years before switching back to Vodafone in March 2021.

Asda Mobile is available in hundreds of stores across the UK and online by purchasing ASDA Mobile Bundles which give you 30 day bundle plans with no fixed contract.

Launched to the public in January 2017, Sky Mobile operates as a full MVNO (Mobile Virtual Network Operator) within the UK, utilising the O2 radio access network infrastructure.