code15:KenBNZ: Noticed my iPhone 4s is alternating between Telecom and Spark Network IDs. Also seems to be running hot and draining the battery. Not chugging through (billable) data according to my usage meter but feels like it's not happy with the network. Maybe spending a lot of time polling to register Telecom or Spark - should be the same? The guy in the Tele---- SPARK shop noticed his iPhone doing the same - though not dropping his battery as much. Anyone else experiencing same?
Mines keeps flicking back to Telecom NZ too. There will be a carrier update out soon which hardcodes the carrier banner to Spark NZ (with iOS 8 if not before).
Don't think overheating issue is related though, try closing all your apps manually and doing a restart.
Im confused why they need a carrier update instead of just making the towers broadcast the correct name..