iPhone 4 lag

IllusionEntity

Evangelist
Gold
Jun 3, 2010
1,987
163
63
Borough Green, Kent, UK
#1
Hi Guys.

My phone has been running smooth as hell but today and now the touchscreen is a bit off... It like... If I swipe to a different screen it will jolt and show half of the next page and then come back quickly. The multi-task bar takes 4-5 seconds to load up.
I just have lag in general.

Whats going on? I am restoring now but I don't know if it will fix the problem
 

JWiPhone

Genius
Gold
Sep 18, 2007
6,324
421
83
Los Angeles, CA
#7
I had the same problem with 4.2.1. What helped me though was to shut down the apps running in the multi-task bar. It doesn't have to be all of them but just a portion of them, and I noticed my iPhone was working great again as normal.

It is probably a memory issue.
 

JWiPhone

Genius
Gold
Sep 18, 2007
6,324
421
83
Los Angeles, CA
#9
Memory issue? What do you mean?
Just like a computer your iPhone allocates so much memory that can run low if too many programs are running. I use AppSwitch app (99 cents) that shows me how much memory is being used. All I know is that my iPhone 4 was very laggy with 4.2. For example, I would have to hit my home button twice before my screen would move. After I shut down programs in my multi-task bar my iPhone was very responsive again with no more lag.
 

Bennyboy

Genius
Platinum
Jul 21, 2010
14,017
1,756
113
PA
#10
I'm having "some" lag issues as well plus battery draining a lot faster and photo not displaying properly.
I'm doing a restore and so should you, just make sure you sync and back your phone up before you do anything.
 

Bennyboy

Genius
Platinum
Jul 21, 2010
14,017
1,756
113
PA
#12
Man you guys are fast. Try JW solution first, I'm still doing a restore only because I'm not happy with the battery
 

Bennyboy

Genius
Platinum
Jul 21, 2010
14,017
1,756
113
PA
#13
So are we thinking that this is a 4.2.1 issue guys? As I got my iPhone 4 replaced Saturday brand new
In my case it is, and I'm not the only one, but I never noticed a big lag like you're saying, that's why you should try JW solution first and see how it goes