iPhone constantly searching for carrier (no service)

I had exactly the same problem with iphone 4.

This is what I did:

1. sync and backup phone on itunes

2. settings - general - reset - erase all content and settings

3. set up phone again using itunes backup

It did the trick!

Goodluck

iPhone no service error 100% fix in 5 minutes

I had this issue for about 1 month & i went through everything- Googling,yahoo search & apple discussion.

At last I have fixed my iPhone4 in 5 min.

First of all u need to know if it a software or hardware issue-

1. Toggle airplane mode for 4 seconds & wait for network.

2. Reboot iPhone.

3. Network reset.

4. Manually choose network.

5. Hardware repair method-

(Switch off your iPhone & take out the sim tray before continuing)

Take out the 2 screws from the bottom near the speaker mesh. Slide up the back panel & take it off.

Now take off the battery by taking off the little screw on the battery terminal.

You will find a very thin black wire near the battery terminal with a small plate on its end.

Near the terminal stand u will find a place to fit the plate. First clean the plate with a cotton cloth gently.

Connect plate on its place it & press it a little till u hear the little sound- tick.

(*Remember not to press so hard*)

Connect the battery & put the screw back. Get the back panel again & put the bottom screws.

Yippee..!!! U have fixed the annoying- NO SERVICE error on iPhone 4.

Try checking if the sim card is in right, it might be not properly in it's place, use this guide to guide you.

There is a TEENY TINY inductor on the motherboard which is apparently very easy to knock loose of the soldering and therefore breaks the antenna circuit if is dislodged, I would look at that if a software solution is not helping. Most of us doing first time repairs were entirely unaware we'd lost it most likely when we first removed the motherboard's last screw under the "Do not remove" warning tape. I had no idea why my new screen worked so beautifully but I had a whole new problem of "no service"! I tried everything and found no solution until this (thankfully someone figured out what no one else had)

Check for this component either missing or loose and/or damage to circuit traces in this area. Also check that the dock connector piece hasn't come apart at the seam and lost the spring loaded pin which is supposed to contact a small pad on the motherboard - too tight screws or the wrong screw can cause the board to bend just enough to break that contact because it lifts away from the pin also.

hi, here is what can be done to rectify the problem..iphone like any other phone is fragile....one need to be careful with it always....since your iphone dropped the possible problem that arrive from it is that..your iphone must have loose which cause no service problem..since sometimes the sevice we show up and later dissapear..look for a tech that knows well about the iphone and let them loose the iphone to the back side and tighten up any loose part....am sure this would work.

i have the save problem in UAE, the problem comes from the LTE network.

the problem solved as the following:

1- make factory reset and complete format

2- after formating and while activating your phone , you will get message from your carrier saying that there is a carrier network update, this update is for the LTE .

Don't update the carrier and keep using normal or 3G, then the problem will solved.

note:

before update you will see you mobile like this:

setting -general - cellular - cellular data & Enable 3G.

after :

setting -general - cellular - cellular data , LTE, .......etc.

Maybe this will help someone, or bring us closer to solution.

Hey, I have similar problem. Iphone 4 looses carrier randomly, normaly after few hours. If I just reset it, it doesn't help.

However, what helps is this: I wrap it in a plastic bag or plastic foil for food and put it in a deep freezer for a hour or so.

Then I take it out of the freezer, wait few minutes that it warms up a little (this is the critical part for moisture ---thats why it is in a foil) and then power up and it works for another few hours.

hi all

I dropped my 3gs this morning and it went searchingall day ,When I power down it would come on wit 1 bar for a minute and then searching

again Reseated the sim and exact same ,all this time the WIFI connection worked to my wireless lan.

I tried my sim in my work phone and bingo no service

then put my work phone sim in my Iphone and all worked immediatly.

No logic bt ssim broken in fall not phone problem at all.

Hope this helps some of you

Ronan

hey guys, i had the same problem on my wife's iphone 3gs, i tried so many ways but nothing, i took it to a store and he fixed it for a 20$.. but again i had the same problem today with my iphone 3gs, but i google for a help and here is what i got and it worked perfectly :

"Use old SIM card, putting the old SIM card in the iphone (respring) then remove it and replace it with ur SIM and here it goes working again"

hope it works with u guys it worked for me.. best wishes and good luck.

Jami from lebanon

Sounds like you Blue inductor got damaged. Check your motherboard if the blue inductro is damaged or missing.

See the picture below.

After taking a dip in the pool, I was stuck in the Searching... mode for a day. Everything else worked on the phone. I tried rebooting. No go. Came to this site and attempted to try the "back up iphone and reset all settings" While backing up the phone, I decided to put a the phone next to my portable heater.

When I connected to iTunes, it was waiting for the ios 6.0.1 update so I decided to update. It was under the heater for about 10 minutes and after the reboot of the phone after upgrading, the phone works now. Hope this helps someone.

i updated my iphone 3g on iso 4.2 but after updating when i insert sim card into it only 1 signal appears after 5 seconds i lose this signal what can i do with it? Help me

hiya followed Ifixit to repair Iphone 4s all went fine but had "scanning" no service" on, messaging, wifi and phone calls worked fine so knew nothing could be seriously wrong checked battery connector spring clip was touching rear cover all ok tried setting time n date(was at 1 jan 1970) that dod'nt work, re booting never done trick turned on 3G and hey presto it stopped scanning and found carrier(O2 uk) and auto time n date worked turned off 3G and all ok now hope this helps someone else best regards

Darkman

But i think if u get redsnow on cydia and buys the R sim for ur version i think u can get service there is a website where they show u the tricks. But sorry bro cause i dont know the links

Hi I too had this problem with iPhone 6, try this first, click settings, carrier, see if 'auto' is on if so switch off, wait for list of providers and click on your provider, this may resolve the issue. Leave auto off!!! Hope this helps

my phone 4s wont even get service it says searching for 2 days now and it says network not available but everything else works fine such as wifi and screen

Same problem facing after I dropped my iPhone 5. I saw power button permanently pressed what should I do?

~Jiten

My iphone 6s shows NO SERVICE problem i tryed different sims but the same problem as been shows.i tryed 5/6 method to solved the problem but it dnt work.plzzz can you guys HELP ME!!! what could be the issue

When screens are replaced and the battery is unplugged then the clock and date resets to 1970 (dont ask lol) but if you tryed all others and sometimes its all down to going on the clock time change the time and date and that will get your service back but i only know this works with the iphone so good luck,

hi guys my iphone4 is showing no service and there is no carrier on my setting. my version 7.1.2 please help me tell me solution

1. Check the World Clock and delete any world clock settings. Then reboot. If this does not work

2. Go to Settings > General > Date & Time. Manually set the Date and Time Zone to your time zone location. Then reboot.

Hey guys ... did anyone fixed his problem with no service issue as I had the same ..

Any update please ?

if restore any iphone while it say no service you will break it cause it wont activate without celluer network basically bricked

Switch off the battery saver. It will do the trick. Don't turn it on again otherwise the network will be lost again.