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My iPhone is constantly searching for a signal and never finds one. We've tried everything, resets, we've checked the SIM card, we've checked for Carrier updates, I've even replaced the cellular antenna and still it won't work. Any one have any clues?
Ist dies eine gute Frage?
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If you have already tried the antenna fix, the Software fix, the charging port fix, housing swap, etc...keep reading...
Over the last year, I have had many of these come across my bench and the majority 8 of 10 (Guestimate) have been the Baseband IC. Dial *#06# you should see the IMEI, IF Not, then this just may work for you.
You will also want to look for Modem Firmware version in settings to see if it is listed, if not, then I would look at U_PMICRF Baseband power management IC.
also, if imei is there,modem firmware is there, it could be one of these 3: U_ASM_RF antenna switch module ic chip, WTR1625L Transceiver chip IC U_WTR_RF, or Receiver IC U_WFR_RF WFR1620
I suggest (If you have the experience and tools) that you remove the Logic board and the shield next to Sim Tray off. (The one closest to the battery connection, not near LCD Connectors).
Then you have a few options:
1. A temp fix that does work as a bandaid fix, reflow the baseband IC somewhere near 340C to 360C
2. Remove the baseband IC and reball it, also running short jumpers on the U1 and V1 pads (Not a permanent fix but much better than the reflow)
3. Same as number 2 but run long jumpers from the U1 and V1 pads. This requires removing the Sim Tray to get to one of the destination points and pretty difficult to reuse the tray as there is alot of plastic in it. the other jumper goes to the back side of the board.
Here is a video referred to me by @refectio of Chris long doing this repair:
https://youtu.be/1o49Ya-jEAA?t=3h55m00s
This has worked very well for me to fix this issue using the "Long Jumper"
As for the question on the Iphone 7 plus chip, please tell me which one?
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my iphone 7 plus .. have only 2g after remove a IC from logic board .. this ic is fault .. ic name is 025u3374 ..thats all i know ..were can i found this ic ..if it cannot be found on the market can bypass this ic and get 3g works ...plzz help me sir
I will add a picture above in my original answer, copy and circle the chip
I have an iPhone 6 plus only getting 1x on verizon no LTE and no GSM service any idea what would cause that?
Could be as simple as an antenna replacement or became disconnected. The Data antenna is part of the charging dock and Wifi antenna is on top, near volume buttons. If that doesn't fix it, it could be a baseband issue, or maybe the switching IC.
It's funny how you propose an actual permanent fix/ solution to this problem and yet everyone is amazed that if they smack their phones around (see answer below) it will work for a few days/weeks before they have to smack it around again. It's like Touch Disease all over again :>).
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changed the upper antenna connector. lower antenna/dock/headphone 3 times. each time i replaced the lower, the network worked for a day or less. a darn shame. iphone 6 was too good to be true.
darn it. this is possibly temporary but this worked. for now at least. and dont blame me if something else happens. i took the risk as well. anyhow.
shut down phone.
remove sim card.
place phone in protective case.
drop on a sturdy hard table onto its backside from 12 inches high.
re-insert sim card.
Boot up your phone and see that glorious LTE.
its going to be awesome to wake up to "searching" "no service".
this is clearly a design flaw with the IC Chip that connects the antenna/networking system.
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I have the same exact problem and some how this works. I have taken the thing apart so many times messing with the F cable but this is the only solution I have found that has worked.
Do you have any ideas on what parts to replace to avoid this? I hate to buy a new phone when I know this is a hardware problem.
This totally worked! Genious. Thank you.
That's wonderful! Thanks!
Had the same problem. This worked for me. Thank you. I'm trying to hold out for iPhone "8" to upgrade.
Tried every other solution mentioned, yet hitting it hard on the back of the phone (didn't do a 12" drop as suggested), removing the SIM, and powering off, is the only thing that worked. When I turned power back on, it then said "No SIM" and after putting the SIM back in, everything came to life.
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Have you tried resetting the time and date?
Make sure you're connected to wifi. Go to time and date settings, click set time and date automatically off then back on. Then restart the phone.
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Totally worked! Thanks.
And now it stopped working.
Worked for me too. Thanks craigad24, Will see if it lasts.
This worked for me too! For about 3hrs. Tried the trick again, but no dice.
Wow, totally worked! 2 hours on the phone with Verizon. 1 hour with Apple. Neither of them mentioned this. I had just about given up - already had a new chosen. Then walla! 3 days and still good. I can't believe this fix is not mentioned in any of Verizon (or other carrier's) or Apple's troubleshooting guides.
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Hi all after some extensive research on the subject (constantly searching for signal ) you read all the forums and hey some will say it's an antenna problem so you replace it with no joy others say it's a time and date issue fixed with a manual edit yes it can be tedious as it will skip forward or back 10 years if you try to go to quick. Or someone else said replace the SIM card reader anyway you've done all of the above and still nothing. here is what I found!!start here! If you've ever removed a SIM card before you will notice that almost immediately the phone says no sim! But with a broken or damaged ic/baseband chip,without SIM card inserted, you will notice that your phone Never says no SIM card and when you do put one in it's still searching only to continue forever. So then after all of this you think hey I'll just update with iTunes wrong again because hey presto error-1 so then more research and apparently it's the baseband chip causing the issue the whole time just had a quote of $85aus for parts and labour to repair it. If your thinking of trying to reflow it yourself or place it in the oven for 20 mins @180. consider the fact that for less than $100 you can have it repaired properly and a Pretty much new phone again if your still wanting more check out micro soldering or baseband chip repair on YouTube then decide yourself. Hope this helps and saves everyone else from the same headaches.
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Regarding your statement about "for less than $100 you can have it repaired properly" - where can you get it repaired for that amount?
Here in Philippines, apple store service center at SM North Edsa Annex said me this afternoon that a grayed wifi iphone 6 plus will be swap for new phone worth 22,000 pesos, they dont repair it so i leave the service center and look for some technician and ask how much for replacement of wifi antenna due to grayed wifi, he said its worth 3,500 pesos about 70 $ and its the wifi chips that needs to be replaced, i try how much in Greenhills Shopping Mall and give update on my status
my iphone 6plus still working after wifi ic replacement in greenhills, philippines cost me 3,800 pesos less 80$, 3000 php for wifi ic and 800 php for battery since it was damage from my experimental resetting, connecting to computer, pushing button, replacing the sim everything they said to try, when your iphone doesnt turn on, the battery was damaged , so I suggest having grayed wifi have your iphone repair by technician, iphone parts are available and they can repair it. mine It’s like new even my battery is not the original expensive one almost 1 year now and no headaches
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iPhone 6 Plus, been struggling with searching.../ No service for past few weeks.
Tried this method and it works for my iPhone 6 Plus (suggested by "johnidx" on Feb 27, 2017 on iFIX forum)
1. Power off your iPhone ( my is iPhone 6 Plus)
2. Remove sim slot
3. Place the iPhone on a soft padded surface, screen face down, and hit on the back of your iPhone few times
4. Place your SIM card back and power up. And works for me so far
If signal lost again, tried this method once more.
Dropping my iPhone 6 Plus twice with soft shell case might be the root cause.
Unfortunately with today's feather weight smartphone designs, they are so tightly packed inside, dropping your iPhone basically is death sentence for the phone.
Get a tough graded phone case if you want the phone last you long time.
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If smacking the phone or dropping it gets the phone working then odds are it's not a software problem.
THIS WORKED FOR ME. Thank you !!
Worked for me !! After 2 days of it working then searching for 3 days then working for 2 now searching AGAIN!! I found this and it worked i hit mines off my palm:) thanks
Hitting the sides worked for me.
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These things don't. Work it is a software problem and the way to fix it is to back your phone up delete your iPhone so it's set up as new phone then reinstall your back up should solve problem for best results when reinstalling your back up use iTunes and a cable I did mine over wifi and it worked fine don't drop your iPhone on a table you will just crack your screen
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Doing a reinstall did not work me long term.
i have done this several times and it did not work.
This doesn’t work. Ever.
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I had the same problem no service/searching. Unplugged battery and reconnected worked for about an hr. Same problem for a weeks time after research found out some chip "solder joints go bad" took a blow dryer high heat to heat shield under sim card for about 2 mins(with batt unplugged) let phone cool and now problem is resolved...for now at least. Going on 2 hrs.
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still going strong? this seems like one of the more advanced yet approachable solutions to this issue.
Year 2021, and this was the only solution that worked for me! I'll be watching closely if it'll be a temporary fix.
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if in General setting there is nothing written at Baseband version, seems to be dead baseband chip on logic board. You won't do it at home, service only
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Replacing bottom antenna with charge port fixed it for me.
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Is youre iphone still ok ?
you will have to change the chip on your phone, if you don't understand . go on you tube and type up. iPhone no service. to acquire a chip i don't know where you can buy it but if you do you will have to get a experience person the replace the chip
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Yes, I don't think it's the dropping it that fixes it. It's the removing the SIM card and replacing it that does it. My phone was searching all day, I figured I would try it first without the dropping part and it worked.
Update: like someone said... wake up to see No Service !!! So I went to Verizon today and they said my phone is bent. And that I'm basically screwed. So I followed the same steps but didn't drop it, instead I bent it back gently, replaced SIM card. So far so good. Ralph C.
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I did all the above without removing the SIM card. A bend back and forth, reset the time in settings, and dropped it. I figured what did I have to lose after three days of "searching," Hope it lasts.
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you will probably have to replace the housing. This is very time consuming but it will probably fix your problem
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I brought my iphone 6+ to Greenhills to Gerald Repair, first he tried to charged if for few minutes while doing on other phone..its not charging, its totally dead probably bec I keep on trying to fixed it my self removing sim and accidentally on the wi fi assist on 3G, connecting it to computer to itunes..diagnostic
...and some other things charging even its grayed wifi...all the repair thing including knocking the back...dropping in pillow only...and he initially change the battery...it turn on ...it was damaged by keep on operating and charging it under a grayed wifi and bluetooth searching condition... better turn it off and have wifi ic replaced...he saw the grayed wifi and aggreed to replace it cost 3,000 pesos and 1000 pesos for battery...in approcimate 1 hour it was repaired...he got fb account and on internet if you are looking for cellphone repair in Greenhills Shopping Center Philippines...it was 2 weeks ago and my iphone 6 plus works good...never been formatted...it was a 3 year old phone so I wish it last for more than 3 years...my advice if you got grayed wifi turn it off and have your wifi IC replaced you saved 1,000 pesos or 20$ for battery replacement...I"m not sure if the battery had a safety IC or fuse...it seems...my fathers iphone 5S shutdown last Sat 9-2-17...dead even with charger on... we brought it to Gerald and initially replaced the battery it turn On...the battery was damaged even though it was unnoticely bulged...so grayed wifi needs new wifi IC, apple store dont repair it, they want trade in and additional 22,000 pesos thats 440$...frustating why apple store cant repair their own product
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im having this same problem, it wont find service.. I will take my screen off unhook the ribbon cables hook them right back up and then it will find service for about 20 mins, then its back off again.. anyone know what this could be?
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I wonder how many of you keep your phone in your back pocket. I bet a bunch.
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I have replaced so many iPhone charging docks, antennas, screens over the years, trying to address this problem. What I’ve learned is the constantly searching issue stems from the phone being slightly bent, repeatedly. A good example of this is keeping your phone in your back pants pocket, or even front pant pocket. Eventually this causes solders to break free, or antennas to pop loose, or SIM card trays not to line up inside the phone, causing the SIM card to be unreadable, or only function occasionally. Additionally, the phone becomes hard to repair in other ways, new screens don’t line up with the frame, touch screen issues happen off and on, all stemming back to the fact that wherever your iPhone is being kept when you aren’t using it, is effecting it’s use. Even if it can be repaired, the phones bent frame often causes the same repairs to be needed multiple times, especially if the clients continue to store it in the same place that caused the original damage to begin with.
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25 Kommentare
Clapping the backside several times very hard on a pillow on a desk worked for me - unbelievable xD - thank to this cool forum
von Christian
I had the 'searching' message on my iPhone. It's a sign the antenna is broken.
I took it to Apple and they told me it can't be fixed - I needed to buy a new phone. I stopped in a store that repairs phones, and they replaced the antenna in an hour for $69.
von lulu
How do you know it is antena, not the logic boards? It may be many things.
von Mateusz Lacki
its the wifi IC on my iphone 6plus, apple store dont repair it, they want replacement of unit for 22,000 pesos or 440$, I brought it to Geralds Repair in Greenhills Mall and WIFI IC was replaced for 3,000 pesos or 60$, and 500 pesos for battery replacement since it was damaged fr. my experimental resetting, connecting to diagnostic itunes, charging and turning 3G on even there is Grayed wifi, I found it on overheating Mode since I accidentally left it under my pillow with screen warning, then turns off and wont charge decided for apple consultation and repair by technician
von William
I did what Christian suggested above, clapping it on the back while it’s on a pillow on a hard surface. It worked!
von Flyn Ludington
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