Check out if this solution works for your guys cos it did for me
Install the application Juice Defender from google play (purchasing the ultimate version will give you all the additional features, which really are awesome and is a good idea (especially due to the battery drain Android phones are known for).
Open it and set each item as per your requirement.
Some options should be done as follows:
In Controls
Ensure Autosync mode is on Ping
Keep Enabled mode should not be selected
In Schedules
Enable periodic connectivity
In Triggers
Enable Screen option and Traffic option
What this does is as soon as the screen goes off, it disables wifi/data connectivity (though sync option will continue to check your mails periodically) and then there is no signal drop. When you put the screen on, it will connect to wifi/data as per their availibility.
Do let me know how it goes.
All the Best
Manoj
