iPhone 5s Performance Problem after updating to 7.1.1

ok I think I've figured out why this problem exists

It's a GSM /CDMA issue when I remove my simcard the phone is blazingly fast like it was before the update.

The momment I unlock the sim card it lags.

and this also exist in 7.1 as well as in 7.1.1

I bought my A1457 from UK

Now I live in Cyprus.

there is something going on with the sim cards, unfortunately I can't find a uk sim card to test it.. :/

OK I have isolated the issue.

It is a bug that exists both in ios7.1 and 7.1.1

It's not a GSM issue.

I was wrong in my above comment.

The real reason is the LONG string in the carrier's name

For example VODAFONE-NAME-BLABLABA

Find a micro sd from a carrier with a shorter name (5-4) letters and your iphone will fly.

The reason why this happens is because they are allocating two or three NSSTRINGS in a loop and then realeasing them.

This is not a memory leak so is very hard to spot, especially if those fellow programers @ california didn't test this with carriernames that had longer strings.

Another solution can be changing the carrier name using an app like carrierEditor

I opened a bug issue over @apple developers site but don't expect apple to fix this any time soon, this bug exists both in 7.1 and 7.1.1 so if they totally ignored it once already..

The simpliest solution is change provider to one with a smaller name

Another idea is change your carrier logo, not sure if that will help or if is possible at all with 7.1 but tell me your provider so I can check if is possible to do it the easy way.

<Edited By Host>

My network operator's name is "Telekom HU" (so it's a 10 character length string), and my was only slow with 7.1.1, it's fast with 7.1. By the way, I think 7.0.x is slower than 7.1. Ever since I installed the latter, the phone feels more responsive, and I hardly think it's a psychological thing:)

"The reason why this happens is because they are allocating two or three NSSTRINGS in a loop and then realeasing them."

Respectfully, I disagree. I can't see why this could affect the performance in such a devastating way. One alloc-release cycle should take only a few microsecs, visible lags would need tens of thousands of such cycles...

Hey guys

Just go back to 7.1.0,Apple is signing it

I am already in 7.1 ,although it is surely not as bad as 7.1.1 The particular problem that we describe still exists in 7.1 in a less apparent manner and it drains the battery. (at least in the European models signed as 6,2)

The moment I put a sim by a different carrier the phone is blazingly fast. like in 7.0.4

"Telekom HU" doesn't seem as long enough to create a problem, does it even animate? Mine is "cytamobile-vodaphone."

however..

To be 100% sure see if you are affected by this by doing the following : open a couple of apps and see your speed. look for a half sec lag. in Photos and in Settings, it's really a minor lag.

now remove your sim or put it on airplaine mode. if your phone is faster, then you are affected.

i have the same problem 😟 when i'm entering airplane mode (or turning hotspot connection+connect device), it's getting faster. it's happanning after ios 7.1 now i have 7.1.1 and it's the same. iphone 5 with ios 7.0.6 is faster then my ios 7.1.1 iphone 5s. please help us 😟 apple help

I don't know 😟