Hi, my question is about the free 4G service currently being supplied by three until the end of June/July (not sure which one). My daughter has the nexus5 and since switching her old O2 SIM card to a three SIM (to change to a different prepay plan) she has been receiving the lte 4G speed on the phone. Do I need to change my O2 SIM also to receive 4G speeds, I'm on billpay, HTC One M8 so I know it is capable of receiving 4G. Also there is no option in the mobile network settings to select 4G/LTE and no software update is available either, following instructions from here
http://www.three.ie/explore/4G/software-update/