Dear all,
What follows is an extract from a Nokia Support thread:
Dear all,
There maybe a way to alleviate the problem, at least temporarily. I am posting hereto an extract from Microsoft Answers where the problem is being discussed.
Mr. Sameer Varma posted "Hello all....
Finally, I found a solution of this hanging issue.Microsoft engineers may have not thought this way, but... I am the first who fixed this problem. Just call your mobile service provider for manual APN settings. Put them manually. Turn wifi sense off and here u go."
I attempted this solution and initially it didn't work. Subsequently, I did the following:
1. Insert another sim to the second sim slot (until then I had been using only one sim) and restart about twice or thrice for the phone to properly identify the settings of the second sim.
2. The phone prompted me to set up "smart dual sim" (which had not happened before as I have been only using one sim)- I made sure that "smart dual sim" was OFF.
3. I opened sim settings of sim No. 2 and manually SWITCHED OFF that particular sim.
4. I went to settings of Sim 1 and switched off 3G.
5. Switched off phone and extracted Sim no. 2 which I didn't want.
6. I had also set "data savings" in Explorer Settings to "Standard" and "data limit" (in Data Sense) to "none specified". Furthermore, I had switched off "automatically connect" under "known networks/connections" in the WiFi menu.
By now, I have got over 36 hours without incident. That's the longest period of undisturbed functionality my phone has had. Please note that I do Not know whether this will be a Permanent Solution.
I will monitor my phone and update with my findings.
I must thank Mr. Sameer Varma for his support and kind advice.
I hope this would at least give us some temporary relief.
Thank you"