I recently updated to 4.0 on my Iphone 3g I used to have 3.1.3.
This update (4.0) has made my iphone horrible slow youtube is slow internet is slow(WIFI AND 3G) some of my apps crash they just get stuck during them or opening HOW DO I DOWNGRADE BACK TO 3.1.3.
This update (4.0) has made my iphone horrible slow youtube is slow internet is slow(WIFI AND 3G) some of my apps crash they just get stuck during them or opening HOW DO I DOWNGRADE BACK TO 3.1.3.