Question: why my tpg no service?
Answer: Network mode. Check that your device's network mode is set to automatic. If you have a 4G device in a 4G coverage area but you are only able to connect to 3G or 2G, make sure that 4G is switched on. ... If you can receive network coverage using a Vodafone SIM card, this means your TPG SIM card may be faulty.