Mine is also the same!
Recently, no notifications sent to me that new message came in. Only when i switched into the whatsapp screen then the message pop out..and i saw the timing on the messages was like 5-10mins ago.
With m1 too. 4G on Note 2
please try Google talk.u will see yourself signing out after 2-3 mins of inactivity. the network state HSPA:11 seems to be sending no data to note ii/s iii on m1. already been talking to their engineer since mid December when I encounter this issue.
affect everything that runs on push/ constant data.
tried with SingTel no issues.
already demo to them in all the 3 customer service centres highlighting it's not a base station issue. the staff ( not engineers) are baffled by it as well.
Its already been like this for more than 2 weeks. I thought i'm the only one. lols. M1 too!

so for now if got WIFI, better use WIFI?


on m1 too using s2. same problem for 1 mth plus already.
Yea bro, I thought yours solved when you didn't reply on the main thread!
My problem started since Mid Dec 2012.
Yea, if you dowan to be blamed for not replying messages or AWOL.
So far reproduce this issue on...
Tab 7.7, S III, S III LTE, Note II, and just my friend's iPhone 5 is also showing this problem (Skype just keep getting sign out if she let the phone idle for more than 3 minutes) but she thought it was fine
Ups for awareness, let's bring this issue up to M1 once we have many people showing the same sign.
Haha.. cus gave up. I'm try to see if it happens on my Ino one. For my note 2, I don't seems to experience this problem when i'm using wifi.
No sync at all.......hey digdub bro. m1 really. sigh, your s2 is cam removed one?
now pretty sure something is wrong with m1 network.
ya my s2 is cam removed one. my wife using note 2 lte on m1 no problem. same as others, on wifi also no problem.
