Well, if you have just gone over to O2 4G you will find that the S4 will not switch to 4G.
It appears that a patch is required to switch it on:
http://community.o2.co.uk/t5/Android-Devices-Samsung-HTC-Sony/4G-on-my-S4/td-p/517436
I was wondering why I couldn't get the signal. A short term solution is to download Battery Monitor Widget:
https://play.google.com/store/apps/details?id=ccc71.bmw&hl=en
Go tests/device info and set preferred network type to LTE/GSM
I now have 4G and let's hope the patch appears asap.


http://community.o2.co.uk/t5/Android-Devices-Samsung-HTC-Sony/4G-on-my-S4/td-p/517436
I was wondering why I couldn't get the signal. A short term solution is to download Battery Monitor Widget:
https://play.google.com/store/apps/details?id=ccc71.bmw&hl=en
Go tests/device info and set preferred network type to LTE/GSM
I now have 4G and let's hope the patch appears asap.
