Why are the apps on my phone crashing?

[AC Question]

i uninstalled some google play store updates and know most of the apps on my samsung galaxy y phone like Whatsapp,gmail & play store crashes half of the time. when turning on the wifi almost the entire phone stops working and i am redirected to the phonebook.....any fix to this problem?

 

[belodion]

First, try clearing the cache in Settings, Storage, Cached Data.

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