I bought an Xperia Sola for RM699 sometimes ago. It was annoying that I could only connect to home WIFI once in a blue moon when I have no problem accessing public WIFI. I called up Telekom and Sony mobile warranty center but each asked me to rectify the problem with the other party. My son said Telekom modem is not of good quality and getting a new TP-link modem would solve the problem.
Being an IT departmental head (though very small scale) before, I didn't give up searching for solution. Finally I read something about changing router channel. Eventually I called up Telekom customer service again to ask them to guide me how to change the channel. After changing the setting from 'auto' to channel 10, my problem is finally resolved!!!
Guess my two sons will look at me differently again!
