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No signal After a changed sim card i still get a weak to no signal on my phone. Could this be a problem with the antenna.

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I dont think a changed Sim card would affect your signal if its the same carrier. If you changed carrier than its the carrier Sprint, tmobile, etc..

Posted on Mar 27, 2008

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I have really poor signal most of the time, sometimes it's "emergency calls only" for no apparent reason, sometimes it says the GPRS is detached, sometimes there's just no bars even though i'm...


Are you using an old SIM card? Sometimes a worn out SIM card won't make a solid connection with the metal contacts, resulting in a drop in signal strength.
You might want to look into getting a new SIM from your carrier, and see if that helps.
Otherwise, I am guessing it is a hardware problem with the phone itself.

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My samsung att phone is in emergency mode...can't use it. what do I do to rectify.


Hi,

This is a simple issue don't worry.First please remove the battery and remove the SIM card and see weather it is being damaged or you can see scratches on the gold plating.Take some cotton and dip it on kerosene and clean it nicely on the edges of the gold plating of the SIM card..Now place it correctly and switch on the phone.Some time loose contact may cause this problem and scratches too....If
still the problem persist check with other Sim card of your friends or family members..
If other SIM card is work's fine then it your SIM card must be replaced by your service provider.Ask him for a free replace..else the Sim card
connector is damaged you have to solder or replace it.If you don't have any hands on,take it to nearest service center.

Note:some time signal strength of the network provider might be weak so it will say have emergency mode.Go to any outdoor area and check for good signal reception.

Please do rate the solution if the issue is resolved or post a comment for further assistance.

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Samsung sph m220. how do I remove the sim card?


That phone is a CDMA phone and does not use a SIM card. Sprint phones and Verizon phones are CDMA and do not use SIM cards. AT&T and T-Mobile use SIM cards, but are GSM phones, a whole different technology/signal. Nextel phones do have SIM cards, and some "World" phones at Verizon have SIM cards for traveling overseas where there is no CDMA, but your Samsung SPH-M220 has NO SIM card.
Just in case you want to check anyway, here is a link to the user's manual:
http://support.sprint.com/global/pdf/user_guides/samsung/m220/m220_by_samsung_ug.pdf

Dec 29, 2009 | PDAs

1 Answer

Why my palm treo 680 always no signal?


Four things it could be are:
1. You are in an area that doesn't provide service for the sim card you have inserted.
2. There is a bad connection inside the phone between the antenna and the main board.
3. If it is locked for a network and a different network's sim card is inserted it may cause this problem.
4. A problem with the main board or the firmware could be the culprit.
----------------------
Unfortunately, unless you have experience with these phones it will be difficult to diagnose which is your problem.

Dec 27, 2009 | Palm Treo 680 Smartphone

1 Answer

My voice cannot be heard by other person for brief periods


If the problem repeated when you swapped your SIM card to another phone, it rules out it being a hardware issue. You can take your SIM card to a cellular store and have them replace it. That should fix the issue. I doubt it is the card itself since the card simply holds your account info for accessing the network. It sounds more like an issue within the network where the internal settings associated with your SIM # weren't properly set. Getting a new SIM card will force the system to fully set and associate your account with the SIM and should (fingers crossed) help fix the issue. Good luck!

Aug 31, 2009 | Palm Treo 680 Smartphone

1 Answer

No signal


u need a new phone or a new plan

Jan 05, 2009 | Samsung SGH-U600

1 Answer

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I bought this same phone off ebay but they will not work properly in North America.I have talked to different sources and the most important Network band here is(gsm850) which this phone does not have, so in North America you get a very weak signal strength.

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1 Answer

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It sounds like you may need a new SIM card. However, the fact that your phone is rebooting on it's own is troubling.

Has your phone been exposed to any liquids that you know of? There is a small round sticker inside your battery compartment, if it has turned red then it has been exposed to moisture. If so, then that could be the problem.

I would try a new SIM card first.

Apr 13, 2008 | Motorola Mobility A1200

1 Answer

Device stays on GSM


You may need to upgrade software, but if you have a sim card pull your sim card and battery leave them out for a couple minutes, put phone back together and see if it resolves your issue, could be a glitch in the network.

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1 Answer

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Make sure they have the latest software on blackberry, may want to check sim cards if phone requires on.

Nov 28, 2007 | RIM BlackBerry 7290

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