Loading data on Iphone 4 using Wifi

[mysterious_guy]

Hi all
I usually use Wifi at home to load data on my Iphone 4 e.g youtube videos to watch on train which helps you to load data quickly and you don't have to use your 3g quota. It was working fairly smoothly in the past but i don't know what has changed recently that i find it hard to load more than one video (15-20 mins) using Wifi. Even the loaded data disappears when i try watching videos later. I have no problems loading data using same Wifi on laptop though.

I regularly have to restart the phone which works at times but not consistently. I have tried deleting cookies and history regularly to free up some space but nothing seems to work. I am starting to face this issue even on Wifi i.e the video doesn't load quickly enough.

Anyonelse facing the same problem? any suggestions?

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