Updated my S7 Edge to Oreo 2 days ago and now my phone won't register on the network. I have called the provider (3 UK) and they say there is no block on the SIM or IMEI. Sim works in another phone, tried a Vodafone SIM in my phone and that won't work either. Was working perfectly before the Oreo update. Anyone had similar, or any suggestions? I've even done a factory reset, but no luck.