Develop Bugs

GSM SIM card mode for Sptint Glaxy Note II?

Is any one brave enough to perform this mode on their new SGN II?
http://forum.xda-developers.com/showthread.php?p=32593285#post32593285
I believe the little metal shield near the microSD slot is Sprint SIM-chip - it in the same spot as SIM slot on other versions of SGN II and it looks similar to the one in the above Motorola phone.
There is a dual SIM adaptor for this phone here:
http://forum.xda-developers.com/showthread.php?t=1952770
so theoretically it could be used to split the connection with Sprint SIM-chip and another real full size SIM

I would love to see the same thing. I was thinking about moving to the Galaxy Note 2 until I read about the embedded SIM. I hope Sprint backs away from this trend or at least someone can hack the Note to allow for SIM switching.

asuh said:
I would love to see the same thing. I was thinking about moving to the Galaxy Note 2 until I read about the embedded SIM. I hope Sprint backs away from this trend or at least someone can hack the Note to allow for SIM switching.
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Click to collapse
If someone can show the pcb board I will start to see if the sim slot can be modded back on to the phone but its looking like i have to wait to get my own to see if i can mod it

internals taken with an S3 and shared via s-beam :good:
http://imageshack.us/a/img254/186/20121030103739.jpg
http://imageshack.us/a/img12/5797/20121030103720.jpg
http://imageshack.us/a/img685/9834/20121030103733.jpg
http://imageshack.us/a/img259/1346/20121030103716.jpg
http://imageshack.us/a/img141/9830/20121030103704.jpg
Some are slightly blurry but hope this helps, btw this thing comes apart just like the S2

Nice photos, can you make a video to show exactly where the sim card is and how it's embedded? Is it soldered or is it just built into the pcb board?

asuh said:
Nice photos, can you make a video to show exactly where the sim card is and how it's embedded? Is it soldered or is it just built into the pcb board?
Click to expand...
Click to collapse
You will not see a real SIM card if that is what you expect yo see - It's an ASIC microchip.
the "SIM-chip" is clearly visible one of the posted pictures:
http://imageshack.us/a/img259/1346/20121030103716.jpg
It is right next to the white letters SPH-L900
And as you can see it is almost the same as in Motorola Photon phone in the original thread:
http://forum.xda-developers.com/showthread.php?p=32593285#post32593285
First picture on the right (also has 880120000 on top) - just a different version
That original thread has couple videos with removal procedure, it would be exactly the same here.
Darkendvoid88, Thank you for posting pictures!!!!!

Ah, thanks for the clarification. Very daunting but at least I know it's theoretically possible. If only this was more practical!
It appears that you'd have to have the phone taken apart just to use the foreign sim card, which is impractical. Maybe it could be stuffed below or above the battery, of course assuming the little wires could fit through some crevice or crack somewhere in the back. Otherwise, this type of hack basically just makes it possible to find your favorite foreign sim card, stick it in and close the device back up.
When I traveled around Germany and the UK this summer, it was super convenient to just switch to the new sim when I needed but I don't see that this will be possible even with this type of hack. Damn!

The op just has it set up like that because the photon is sealed and has a "non removeable" back. There is little to no room for the sim reader. An extended battery back might make this easier for us. Also if anyone has ever taken apart an S2 there is a clip next to the battery terminals. Ours is the same dissassembly process and that clip could be broken off to allow for easy wire routing.
Sent from my SPH-L900 using xda app-developers app

Not too be noob-ish, but this is possible, right? Because if not I just wasted $300 :/

Darkendvoid88 said:
The op just has it set up like that because the photon is sealed and has a "non removeable" back. There is little to no room for the sim reader. An extended battery back might make this easier for us. Also if anyone has ever taken apart an S2 there is a clip next to the battery terminals. Ours is the same dissassembly process and that clip could be broken off to allow for easy wire routing.
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
looks like the sim reader would go right in same place as the GSM sim version either trim the sprint case to model it the same as the GSM sim version or buy a GSM sim replacement case.

nazman23 said:
looks like the sim reader would go right in same place as the GSM sim version either trim the sprint case to model it the same as the GSM sim version or buy a GSM sim replacement case.
Click to expand...
Click to collapse
You can't simply replace the chip with SIM card slot. You will lose Sprint LTE. To make it right you's need to solder a dual SIM adapter instead of the chip, then solder chip back in to micro SIM slot of the adapter and use the regular SIM slot for other SIM you might want to use. The software that comes with an adaptor will help you switch between chip and the SIM

nazman23 said:
looks like the sim reader would go right in same place as the GSM sim version either trim the sprint case to model it the same as the GSM sim version or buy a GSM sim replacement case.
Click to expand...
Click to collapse
No u are exactly correct that chip controls sprint lte access but the good news is a secondary sim slot can be placed directly over it without much case modification you just have to wire it up and remove the metal block from the pcb cover Case also wireless charging is definitely in play due to the pcb is wired for it a lot of hardware modification promise
Sent from my SPH-L710 using xda app-developers app

leond said:
You can't simply replace the chip with SIM card slot. You will lose Sprint LTE. To make it right you's need to solder a dual SIM adapter instead of the chip, then solder chip back in to micro SIM slot of the adapter and use the regular SIM slot for other SIM you might want to use. The software that comes with an adaptor will help you switch between chip and the SIM
Click to expand...
Click to collapse
I am not a fan of the Iphone, but my wife has the 4s and I was able to call sprint to have them unlock the phone so we can use it overseas with another sim card. With that being said is the Iphone the only phone that has the slot to easily take out the card and replace it with another card if traveling overseas?

I wonder if the pcb boards or internals used in the Verizon version could be swapped out for Sprint? It would be pretty interesting if a Verizon version of this phone just required a transplant of the LTE sim chip.

hitdog44 said:
I am not a fan of the Iphone, but my wife has the 4s and I was able to call sprint to have them unlock the phone so we can use it overseas with another sim card. With that being said is the Iphone the only phone that has the slot to easily take out the card and replace it with another card if traveling overseas?
Click to expand...
Click to collapse
Well, the GNII doesn't have that ability :/

The original Photon has a removable sim. Not sure about sprints unlocking policy on that device though.
Sent from my SPH-L900 using xda app-developers app

Darkendvoid88 said:
The original Photon has a removable sim. Not sure about sprints unlocking policy on that device though.
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
I own this Photon and it worked well since it's unlocked for foreign sims but it won't see an update beyond 2.3 since Motorola won't upgrade it. GN2 is the phone I want to upgrade to but this embedded sim is my biggest problem with it.

randy2 said:
No u are exactly correct that chip controls sprint lte access but the good news is a secondary sim slot can be placed directly over it without much case modification you just have to wire it up and remove the metal block from the pcb cover Case also wireless charging is definitely in play due to the pcb is wired for it a lot of hardware modification promise
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
Randy, Are you saying saying there is no need to remove the chip just solder wires from it's legs to SIM slot and switch with software?

Exactly someone would have to unlock it software wise but a simple soder hack and some super glue will allow it to be used directly on top of chip with wires straight to the right connections.. The chip cannot I repeat cannot be removed it manages the sprint frequency of lte and International roaming to remove it would take away ur ability to have lte but the positive is its not that locked down from what I'm hearing its a simple mod hardware wise. also the wireless hack is super super easy I don't understand why sprint left the tech for wireless charging in and routed correctly but removed the access to them. Go figure as soon as I get a device ill do some tinkering
Sent from my SPH-L710 using xda app-developers app

I have to tear it down again tomorrow when I get to the store as I screwed up the rubber grommet that goes around the headphone jack (covering the hole atm). So if you guys need any more pictures of the chip / insides I'd be happy to oblige.

Sprint to ATT mainboard swap

I'm really unhappy with Sprint in my hometown I just moved back to. I put my old Atrix 4G on Net10 for $50/mo and ATT's HSDPA+ network blows Sprint away, even sprint LTE in Indiana.
My thoughts are to get a broken screened Note 2 ATT variant and swap out the motherboard. Correct me if I'm wrong but it should be a straight swap (including the back bezel for sim card). I'll keep my old SPR motherboard around in case the SIM card slot mod ends up working for US networks and as a backup. Think it'll work?
For clarification, this is in no way illegal as I'm not doing anything to the IMEI/ESN, I want to swap all internal circuitry, like a reverse screen swap.
Any blockers I should be aware of?

rockerrock said:
I'm really unhappy with Sprint in my hometown I just moved back to. I put my old Atrix 4G on Net10 for $50/mo and ATT's HSDPA+ network blows Sprint away, even sprint LTE in Indiana.
My thoughts are to get a broken screened Note 2 ATT variant and swap out the motherboard. Correct me if I'm wrong but it should be a straight swap (including the back bezel for sim card). I'll keep my old SPR motherboard around in case the SIM card slot mod ends up working for US networks and as a backup. Think it'll work?
For clarification, this is in no way illegal as I'm not doing anything to the IMEI/ESN, I want to swap all internal circuitry, like a reverse screen swap.
Any blockers I should be aware of?
Click to expand...
Click to collapse
Why not just put ur screen on that housing since thats essentially what you'll be doing anyways. It should work since all the connectors are identical sizes and placement
Sent from my SPH-L900 using Xparent ICS Tapatalk 2

-EViL-KoNCEPTz- said:
Why not just put ur screen on that housing since thats essentially what you'll be doing anyways. It should work since all the connectors are identical sizes and placement
Sent from my SPH-L900 using Xparent ICS Tapatalk 2
Click to expand...
Click to collapse
a better option would be to sell his sprint gn2 and purchase an at&t one

t3project said:
a better option would be to sell his sprint gn2 and purchase an at&t one
Click to expand...
Click to collapse
Or even a straight trade with someone wanting sprint instead of at&t
Sent from my SPH-L900 using xda premium

Cellular radio problem

My note 2 shows no bars with a good sim card installed.
and has no service what soevevr.I was thinking its the
radio.but when I remove sim it shows signal and can make an emergency call.
Im stumped.I even Odonda back to stock no help.
any ideas before I start replacing hardware.
iv tried other sim out friends phone and using my sim in backup phone.
Warranty is expired.any help please

Maybe apn needs to be set up??? [emoji782]
Not sure what happen to your phone but from your explanation points to your apn!!
Sent from my T889 using Forum Runner

Bajanman said:
Maybe apn needs to be set up??? [emoji782]
Not sure what happen to your phone but from your explanation points to your apn!!
Sent from my T889 using Forum Runner
Click to expand...
Click to collapse
Ya I checked that its same as my buddy note 2to same carrier. AT&T

Weird! I've been having the same issue lately.
In my case, cellular reception became spotty (completely losing connectivity in areas where I'd never previously had issues in my two years with this phone), and then cut out permanently after I dropped the phone fairly hard. I replaced the antenna (not an easy part to acquire, as I went through three ebay auctions before someone finally sold me the correct part) and it was spotty again for about a week before completely dying out again. I started using a backup phone out of frustration before finding another fully functional SGH-i317 for sale on the cheap, and I ended up combining the parts from the two to make a working phone. One day in, and the only issue is that the phone fails to regain cellular connectivity after leaving a dead zone (a few resets have so far done the trick)
Anyway, I'm far from an expert on this, but just to get the conversation going, here are some things I noticed:
Both my original Note II as well as the used one I purchased are 16 Gb SGH-i317 (AT&T GSM) models stamped N7105 under the Samsung sticker in the battery bay. Both used the OEM blue antenna wire (some Note II variants apparently use white wires of the same length), and the smaller boards at the bottoms of the phones which the antenna plugs into (with the charger port attached) are stamped SGH-i317 rev0.7 R.C94(KH) 25. The only difference I've noticed is that the new model is stamped "LTE #1" on the bezel underneath the motherboard whereas my old one was stamped with a different number (which of course I can't remember now that I've reassembled it)
Not sure if any of these weird little specifics will help anyone else who is having the issue, but I figured I'd put it out there just in case.
For the record, I'm in the same boat as OP after having reset/restored a few times. I also hadn't installed anything new/ominous or modified anything prior to the issue occurring originally.

Thank you.I also read in another thread that the modem drier may be corrupted. So the phone can not communicate width modem.

rexamillion59 said:
Thank you.I also read in another thread that the modem drier may be corrupted. So the phone can not communicate width modem.
Click to expand...
Click to collapse
One other thing if there's a place you can take it to and have them check the sim tray?? Might be a possible fix??
Sent from my T889 using Forum Runner

I would flash the current AT&T modem, then use a few APN'S until you find the best for your area.

Iv been trying the different modems and apns.no luck so far.
Im going to do as Benjamin said and have sim slot checked.
Although it seem it is working because.it shows son when installed.
And nothing when out

You don't mention flashing any custom roms or updates, but assuming you have, the best way to troubleshoot your phone would be to return your phone all the way back to stock. This strategy has cured baseband, gps, headphone issues etc.

Lost Cell Signal after replacing charging port connector.
I have a SGH-i317 NOTE 2 and am experiencing the same issue after replacing the charging port connector.
does anyone know if the charging port connector is related to cell phone signal strength? After replacing this part, i cannot even get a signal indoors and only a weak signal outdoors.
careet said:
Weird! I've been having the same issue lately.
In my case, cellular reception became spotty (completely losing connectivity in areas where I'd never previously had issues in my two years with this phone), and then cut out permanently after I dropped the phone fairly hard. I replaced the antenna (not an easy part to acquire, as I went through three ebay auctions before someone finally sold me the correct part) and it was spotty again for about a week before completely dying out again. I started using a backup phone out of frustration before finding another fully functional SGH-i317 for sale on the cheap, and I ended up combining the parts from the two to make a working phone. One day in, and the only issue is that the phone fails to regain cellular connectivity after leaving a dead zone (a few resets have so far done the trick)
Anyway, I'm far from an expert on this, but just to get the conversation going, here are some things I noticed:
Both my original Note II as well as the used one I purchased are 16 Gb SGH-i317 (AT&T GSM) models stamped N7105 under the Samsung sticker in the battery bay. Both used the OEM blue antenna wire (some Note II variants apparently use white wires of the same length), and the smaller boards at the bottoms of the phones which the antenna plugs into (with the charger port attached) are stamped SGH-i317 rev0.7 R.C94(KH) 25. The only difference I've noticed is that the new model is stamped "LTE #1" on the bezel underneath the motherboard whereas my old one was stamped with a different number (which of course I can't remember now that I've reassembled it)
Not sure if any of these weird little specifics will help anyone else who is having the issue, but I figured I'd put it out there just in case.
For the record, I'm in the same boat as OP after having reset/restored a few times. I also hadn't installed anything new/ominous or modified anything prior to the issue occurring originally.
Click to expand...
Click to collapse

I747 motherboard in a 710T - will it work?

I'm not sure if this should be posted in the 710 forum or here, but I want to end up with an I747 so that's why I picked here.
I have a perfect, absolute mint condition 710T from Boost. It's not even 6 months old. But I don't like being stuck on boost, and I liked being able to swap sim cards/phones when I was on GSM. I have the option to obtain, cheaply, a rather roughed up I747 from AT&T, which is unlocked, but also has a broken lcd.
My question is, since I would have two complete phones, is it possible to put the I747 guts into the 710T shell? I know that the motherboards are slightly different. The biggest difference I've found from looking at pictures is that on the I747, on the lower part of the skinny side section there's a (roughly) 3/4 inch long metal piece, where on the 710T there's some little square things instead. Other than that they appear to be the same except for the obvious lack of a sim card slot on the 710T. The antenna location and connections look to be the same also.
If this type of swap is possible, would I only need to change the motherboard and the midframe (the part with the SD and sim holes)? Or would there be other parts I'd have to change also?
I searched both the 710 and I747 forums but didn't find anyone doing the same, except one guy who only had the motherboard of an I747, and not the whole phone, so of course he wasn't able to do it. Any insight is greatly appreciated.

SM-910V, bad motherboard, can I use lcd for N910Tmobile

I ran into problems with the note 3, I had 2 us cellulars, with good lcd and bought Tmobile thinking i could use front of phone install tmobile motherboard and antenna and be good to go... boy was i wrong.... the chassis was different and i found out only AT&T and Tmobile phones were interchangable for parts and the CDMA version I assumed were also between eachother,
Have things changed with the note 4? I have a Verzion Note 4 with a bad motherboard and bad charge port. Can I get away with buying a cracked N910T and swapping out the back side of the lcd/chassis (installing, motherboard, charge board and antenna without having to unglue the lcd from the chassis, any other models where I could salvage my SM-910V lcd and get away with buying a cracked model that operates on most of the bands that T-mobile covers exp: maybe sprint. the Verzion I think was just running on Two bands of Tmobile for my note 3 and would loose signal with traveling up north only worked decent in metropolitan areas.
I guess what I am asking is, is the chassis/frame the same part/mold with all n910X? If not, tinkers, what are my options?
Operating on a very low budget of $40 maybe 50 an need a note back in my hands. I still have 2 of the odd ball Us Cellular Note 3 lcd's in a box somewhere. with only a year of use on them.
Thanks....

sm-n910v
I would get another Verizon note 4 that is cracked which covers more bands but I want something with an unlocked bootloader.
Had to downgrade, and spend about 3 hours unlocking Verizon boot-loader and I think i was missing a band of lte on Verizon phone.

I had same problem but with tmobile and bad logic board motherboard due to emmc going bad so I swapped it out for a verizon note 4 logic board. It should be the same swapping the verizon for the tmobile and should fit.