My Huawei Honour is stuck in air plane mode. I cannot disable it as the controls are greyed out.
I tried rebooting and resetting the system cache. What else can I do?
Do you definitely have a sim in your device? If you do not, then you cannot disable airplane mode.
Also, is the item in the Power Options menu and the Wireless and Networks settings menu disabled? If so, it is likely a sim error.
I had the exact same problem in my Galaxy SII since yesterday, this post was the solution http://www.inflightmagazine.co/?p=351
The author refers to two steps to solve the problem, I would add the following steps between Step 1 and Step 2