I recently went to Spain for 5 nights. To avoid breaking/losing my HTC one I transferred my sim to my old sensation to use whilst away. Once home I transferred my SIM back to my HTC one but it is no longer recognising my SIM, just saying emergency calls only yet the sim still works fine in the sensation. The HTC one was working perfectly b4 I went away so I fail to see how it has 'broken' itself whilst sitting on my bedside table for 5 days! The phone knows there is a SIM inserted because when I remove it it says 'please insert SIM'. I have tried a factory reset and even had a replacement sim from ee which have been to no avail. Any ideas on what is wrong? Any thoughts would be greatly appreciated. Thx.