wifi connectivity

For a month now, I've been facing the same issue. The wifi speed in my mobile phone is too slow; but it works just fine in my laptop. I've tried rebooting, resetting the modem and router. Rebooting and updating my phone android OS, but nothing worked. I don't know what to do. I contacted the guy...

Dear friends I have my office at ground floor , having wifi router cum modem D-link 2750u ...now i have my room at 2nd floor where i dont get any wifi signal ... ...so please suggest the device which i should buy to extend the signal of my wifi modem ...also i can't do any wiring at home ...so...

i recently purchased iball wireless router WRX150NE. i have local ISP. i configured the router thru static IP given by the provider. my ISP also gave username and password to connect to the internet. so each tym i strt the laptop i need to enter username and password aftr opening my browser for...