i bought a new factory unlocked iphone 4s and faced a problem of failure in message sending and outgoing calls. the signals get droped after few minutes.. the outgoing calls get failed .. i cant send messages or make calls. sometimes it goes to as invalid sim card and some times it appears as no service. what the **** is going on . i spent that much money to face all this. help me out with this one please. what should i do..???
Update your phone with the latest frimware.
If that doesn't help you try to talk your carrier and replace your sim card with a new one.
If the both above solutions doesn't work for you, you may replace your SIM tray with an iPhone 4.
Also, If possible can you give us your phone's serial number. So that we could check if it is 44th week's product. As you know some 44th week products are having issues.
I was so fedup with the same problem that a lot of users have, i.e. "Searching", "No Service" and "Invalid Sim" that I took the plunge and had my phone hacked by a specialist. So far so good. The iphone is behaving very well and has not lost the signal at all since the hacking. I was informed that it is advisable to have the phone replaced by Apple. If the phone stays stable for the next week or so, then I think we have the problem solved. South Africa has no Apple store or warrentee by Apple, so I had option but to hack it. Once hacked, Apple wont replace it for you people who have Apple stores in your country.
Your phone is a 45th one.
You may check by your self on http://www.chipmunk.nl/klantenservice/applemodel.html/
According to my knowledge, your phone shouldn't experience radio issues after trying the methods I have provided in my previous posts. If those problems continues to happen, I suggest you to visit Apple Store and replace your phone.
Sorry that I couldn't help you!
thanks for the solutions eddergram.
apple replaced my phone and i upgrade to 5.01 9A406 then i have invalid sim again and they replaced my phone again.
Now how can you tell if your sim is 64 or 128?
Also, when i insert my sim, i get on itunes: "Apple could not activate your phone, please try again later."
Maybe because my sim had a pin on it and from middle east country - so I was forced to start from the phone.
I disabled sim pin
Changed carrier choice to manual - chose Bell (best roaming charges)
Set up as new phone and syncedmy music / apps / contacts via icloud
I will attempt to request a 128 sim from local carrier Fido or from my home country carrier STC
Now the second phone that apple replaced to me is iOS 5.0
Should i keep it or upgrade to 5.01 9A406?
What features do i lose if i keep 5.0?
My phone details:
iPhone 4s White 64 gb
Modem firmware 1.0.11
I am in Canada but using roaming chip from STC
Has anyone heard of the SHORT CIRCUIT Theory that the magnetism in the tray short circuits the sim card.
Anyone tried the soluton of covering a part with tape seen here:
Has it worked?
Thanks for your reply.
I think i found the solution:
Apple store in Canada replaced my phone twice.
So i have been through THREE iphone 4s's but i was still getting invalid sim.
Apple was saying the problem not with the phone since the sim didnt work on all 3 phones
STC said problem was not with their sim since it worked on other non apple phones.
STC never heard of 64k or 128k sim
(everyone blaming the other)
They are both right. The problem is with the iOS COMMUNICATING with the micro sims as eddergram mentioned in his early post. The phone's triband technology switching from 2g to 3g and back does not link up with the sim correctly and sometimes the update to 5.01 burnt the sim so you get invalid sim.
Just upgrade to 5.1 AND request a new sim card - your battery will be great & your sim will work fine.
Dont bother explaining to carrier the problem, just ask for latest generation 3g sim.
I got one from FIDO carrier in Canada and it is perfect / battery amazing with 5.1 ios
I requested also a new STC sim from my family to send to me and i will test it when i receive.
Hope this helps everyone.