Hi guys
I known that this A5 2017 model have two types.
1) A520F - Single SIM model
2) A520F/DS - Dual SIM model
I have question of Dual SIM model and single sim model firmware compatibility.
Q#1)What if i flashed Single sim firmware (EX)AU-Vodafone, CSC:VAU) on dual sim hardware model (A520F/DS),
Is it working only Single sim mode? or it can working Dual sim mode even Single sim firmware(VAU)?
Q#2) if Q#1 is true and flashed Single sim firmware then restore to Dual sim firmware (like India, Taiwan, UAE regions firmware will support Dual SIM),
Is it restored fully dual sim mode from Single sim firmware ? I am worrying if i flashed Single sim firmware then back to Dual sim firmware, modem(Like IMEI #1, #2)/baseband information lost or not
and bootloader locked by previous(Single sim) flashed bootloader. Also it it void Knox warranty? I known that official firmware cross flash is not void know warranty, is it correct?
Thank you
Just flash with odin, know will not be triggered by flashing official firmware.
Just test it, u won't lose ur data en if anything went wrong just flash your stock firmware back.
bassbounce said:
Just flash with odin, know will not be triggered by flashing official firmware.
Just test it, u won't lose ur data en if anything went wrong just flash your stock firmware back.
Click to expand...
Click to collapse
Thanks for your advance.
I will try it if i buy A520F model.
BTW ,Who have gps poor reception problem using A5 2017 model??
Some of A5 2017 users(A520S,A520F) have poor gps reception problem. They says it may hardware problem and sometimes they wont get gps signal on the Google maps even outdoor location.
Pulverizer said:
Thanks for your advance.
I will try it if i buy A520F model.
BTW ,Who have gps poor reception problem using A5 2017 model??
Some of A5 2017 users(A520S,A520F) have poor gps reception problem. They says it may hardware problem and sometimes they wont get gps signal on the Google maps even outdoor location.
Click to expand...
Click to collapse
GPS is really good, I have no problems with it.
No GPS issue here all works flawlessly, using A5 dual-SIM model
Sent from Public Phone
bassbounce said:
GPS is really good, I have no problems with it.
Click to expand...
Click to collapse
amlbuton said:
No GPS issue here all works flawlessly
Sent from Public Phone
Click to expand...
Click to collapse
Thanks for sharing exact information.
I rooted mine came with uae firmware. Installed french Firmware and everything is fine
Sent from my MI 5s using Tapatalk
rehanraza80 said:
I rooted mine came with uae firmware. Installed french Firmware and everything is fine
Sent from my MI 5s using Tapatalk
Click to expand...
Click to collapse
Hi, have you root Single SIM to DUAL Sim ? And you bought new holder for second SIM and everything is ok? Which FW have did you use?
Related
Hi everyone, i bought a Xperia M 2005(Dual sim) a few weeks ago, but one of the SIM cards isn't working properly, it lose 3g signal at any time and then returns. I have another Sony ericsson, a SK17i with the same SIM card and 3g runs fine, so, i think that the problem may be due to a Baseband issue, maybe is not the correct for my country (Uruguay).
Any idea where i can find the right baseband or the complete firmware for my SIM operator (Ancel)?
Sorry for my english
Thanks.
elbolso23 said:
Hi everyone, i bought a Xperia M 2005(Dual sim) a few weeks ago, but one of the SIM cards isn't working properly, it lose 3g signal at any time and then returns. I have another Sony ericsson, a SK17i with the same SIM card and 3g runs fine, so, i think that the problem may be due to a Baseband issue, maybe is not the correct for my country (Uruguay).
Any idea where i can find the right baseband or the complete firmware for my SIM operator (Ancel)?
Sorry for my english
Thanks.
Click to expand...
Click to collapse
First, there is no spesific baseband for any sim, but you can flash baseband based on your firmware.
Here is the list of the baseband and the guide http://forum.xda-developers.com/showthread.php?t=2703161
Vroyaloko said:
First, there is no spesific baseband for any sim, but you can flash baseband based on your firmware.
Here is the list of the baseband and the guide http://forum.xda-developers.com/showthread.php?t=2703161
Click to expand...
Click to collapse
Thank you very much your answer and that thread is just what i need
Hello there,
Recently I bought a Samsung A5 2017 in Indonesia (model dual sim) and would like to know if it's possible to put a french firmware (so a firmware of SM-A520F) on SM-A520F/DS model?
Thanks for your help
Sangothen said:
Hello there,
Recently I bought a Samsung A5 2017 in Indonesia (model dual sim) and would like to know if it's possible to put a french firmware (so a firmware of SM-A520F) on SM-A520F/DS model?
Thanks for your help
Click to expand...
Click to collapse
It would be wiser to use dual sim firmware rather than single sim firmware
Sent from my SM-A520F using Tapatalk
Thanks but I don't find any dual sim firmware even on Sammobile....
Is there a risk of brick if I flash with a single sim firmware? Or maybe there's another solution?
Sangothen said:
Thanks but I don't find any dual sim firmware even on Sammobile....
Is there a risk of brick if I flash with a single sim firmware? Or maybe there's another solution?
Click to expand...
Click to collapse
I was worried too but I tried to use the normal a520f firmware and it worked fine.
BTW Some apps may not work because they will assume you are rooted eg. S HEALTH and secret mode on browser but you can actually root to get around this by editing a line in build.prop
I'm on the same boat, only with the A3: I've bought my phone as an A320F/DS (that's what the box says, and indeed it has double SIM), but when you check Settings--»About phone--»Model name, it only says A320F (without the DS). And then when you look for firmware updates in Samsung website, you only find for the A320F. Might it be that A320F/DS is only a second, alternative denomination for the A320F, being both identical? (Same would happen with the A7.)
Sangothen said:
I would like to know if it's possible to put a french firmware (so a firmware of SM-A520F) on SM-A520F/DS model?
Click to expand...
Click to collapse
It's one year since your question, but still my answer may help others:
I've flashed a SM-A320F stock firmware on my SM-A320F/DS and it works perfectly. I believe that the A series firmwares are exactly the same for single SIM and dual SIM models.
In trying to sort this out for the s7 g935f/ds, I believe I was told that indeed the F firmware is the correct firmware for both 1 and 2 sim models. There was no FDS firmware at all.
Hello,
I have Samsung A5 2017 Single Sim (SM-A520F) and I want to know if I can convert it to Samsung A5 2017 Dual Sim (SM-A520F/DS).
If the answer is yes can you tell me how?
If install the firmware from SM-A520F/DS in my phone and use the right sim holder (sim+sd card) will be ok?
I have two phone numbers and I can't use two phones all the time.
P.S. In Europe Official Samsung A5 is the SM-A520F
Thanks for your time.
Peiragmenos said:
Hello,
I have Samsung A5 2017 Single Sim (SM-A520F) and I want to know if I can convert it to Samsung A5 2017 Dual Sim (SM-A520F/DS).
If the answer is yes can you tell me how?
If install the firmware from SM-A520F/DS in my phone and use the right sim holder (sim+sd card) will be ok?
I have two phone numbers and I can't use two phones all the time.
P.S. In Europe Official Samsung A5 is the SM-A520F
Thanks for your time.
Click to expand...
Click to collapse
I doubt it. The phone must have the hardware to read 2 SIMs. Not as eady as putting a SIM caddy. Not sure if the SS device has that hardware in place. The Moto X Play did, but dual SIM can only be done with two IMEIs. Furthermore, the legality of such a system varies from country to country
You could buy a Dual sim Adapter
I want to know...if someone has a DS version can they use a 520F firmwire!?
supertac said:
I want to know...if someone has a DS version can they use a 520F firmwire!?
Click to expand...
Click to collapse
Yes you can, I did this on my A520F/DS downloaded from the following link in sammobile
https://www.sammobile.com/firmwares/galaxy-a5/SM-A520F/
i agree with shafez because i did the same
shafez said:
Yes you can, I did this on my A520F/DS downloaded from the following link in sammobile
https://www.sammobile.com/firmwares/galaxy-a5/SM-A520F/
Click to expand...
Click to collapse
and it didn't affect your guys roms? its still seen as samsung offical? still using samsung pay?
No effect, everything woks fine and official.
thank you so much as soon as payment clears i'M gonna get this dual sim model and really test it (without root to start sadly)
supertac said:
thank you so much as soon as payment clears i'M gonna get this dual sim model and really test it (without root to start sadly)
Click to expand...
Click to collapse
did you convert it without problems ?? tell me to do mine to dual sim thanks
Hi guys and girls of XDA!
I have recently bought a used A5 2017 Dual SIM on eBay and I am in awe with its battery life even after the Oreo upgrade.
However, Samsung does not sell Dual SIM models here in Germany, my model comes from Iran (CSC: THR)
I have read the forum, but I haven't found answers to my questions.
I want to flash a DBT version onto my phone ans I have a couple of questions.
1) I have a DS model which were never available on a German market. Will Dual SIM work after I flash and will I get updates after I flash?
2) The german version of (mono-SIM) firmware, which is available on Sammobile still has A520FXXU7CRH9 baseband. I have already updated to the -I9 one. Does that mean that I cannot revert back o the H9 and will have to wait until german phones get I9?
3) My phone came with a sticker "Middle Eastern and African SIM only". Both slots work with German (and some other) SIMs as of now. Will this setting revert back and it will be locked to those SIMs, if I change CSC?
4) If I will apply the Combination CSC from Sammobile , will I get access to every region-locked option without tripping knox?
Thanks in advance!
Alex.
Anybody here? up!
I don't know the answers to your specific questions - but if the dual sim (Iran) phone you have works with your german sims why are you trying to reflash it?
Is there a problem or something that is not working?
I live in New Zealand and have an imported UAE (United Arab Emirates) 2017 A5 with dual SIM and it works just fine. I havent tried the second sim, but have heard of other people that have and it works as expected. The phone doesnt have any UAE junkware. You are right - the battery life on this phone is great. I did find the always on display uses more battery that I like though. Really wish they had an option that just turned the AOD on when you got a notification (new email/text/missed call etc) but Samsung don't seem to want to provide useful features like this. I came from a galaxy Note 2 and miss that little notification LED
If it helps, I see that the A520F and A520F/DS do not have different firmware - I have searched and there are plenty of posts on this forum where people have flashed Dual SIM hardware with the 'standard' A520F software and report that the dual SIM functionality works fine.
https://forum.xda-developers.com/samsung-a-series-2017/help/sm-a520f-to-sm-a520f-ds-t3704566
The DS model was never officially sold in new Zealand (the single SIM model was) but I have received the Oreo update and several security updates for my phone anyway since I bought it.
Hi, thanks for your reply!
Is there a problem or something that is not working?
Click to expand...
Click to collapse
VoLTE is not showing up in settings, for instance. I would need this option sometimes.
report that the dual SIM functionality works fine.
Click to expand...
Click to collapse
Thanks for the link.
the battery life on this phone is great.
Click to expand...
Click to collapse
I get 26-28 hours of norml usage.
However one thing that irritates me is why it loses up to 10% over the night? Everything is closed and AOD is off, too. Other than that I had to uninstall Chrome because it literally ate up trice as much battery as everything else added up, including screen.
Not sure about your overnight power loss - sounds a litle high...
I use my phone very little and usually only charge it every 4 or 5 days.
AOD uses more power than I like (I have seen 1% an hour mentioned and that is probably about right), so I switched that off.
Really annoyed that Samsung havent made an AOD setting that only enables the AOD on when there are notifications (Missed call, new messages). I would really find that useful.
Have searched all over but cant find any apps that will do this.
For those interested, here is what happened.
1) I have a DS model which were never available on a German market. Will Dual SIM work after I flash and will I get updates after I flash?
Basically, it is the same model and the same firmware. The "normal" firmware for a non-Dual-SIM market works perfectly with a DS model and gets updates via OTA.
2) The german version of (mono-SIM) firmware, which is available on Sammobile still has A520FXXU7CRH9 baseband. I have already updated to the -I9 one. Does that mean that I cannot revert back o the H9 and will have to wait until german phones get I9?
The main thing is that ninth digit ("7") because it represents the revision of the firmware. As long as it is the same, you can flash it. If not you will get a brick.
3) My phone came with a sticker "Middle Eastern and African SIM only". Both slots work with German (and some other) SIMs as of now. Will this setting revert back and it will be locked to those SIMs, if I change CSC?
It didn`t happen to me.
4) If I will apply the Combination CSC from Sammobile , will I get access to every region-locked option without tripping knox?
I did as follows.
I flashed the DBT firmware from SamMobile and got myself a british code because it is a standard one in this Multi-CSC.
Knox not tripped. But VoLTE and VoWiFi still not working
Then I found the Combination ROM (FACTORY BINARY) with the same revision as the firmware (See question 2 about the "7").
I flashed it, dialed some USSD code. Then menu appeared from which I could choose the product code.
I chose DBT, wiped the data and cache and voila, I had a DBT phone with working VoLTE and VoWiFi otb.
Knox not tripped 0x0 !
ioffer007 said:
For those interested, here is what happened.
1) I have a DS model which were never available on a German market. Will Dual SIM work after I flash and will I get updates after I flash?
Basically, it is the same model and the same firmware. The "normal" firmware for a non-Dual-SIM market works perfectly with a DS model and gets updates via OTA.
2) The german version of (mono-SIM) firmware, which is available on Sammobile still has A520FXXU7CRH9 baseband. I have already updated to the -I9 one. Does that mean that I cannot revert back o the H9 and will have to wait until german phones get I9?
The main thing is that ninth digit ("7") because it represents the revision of the firmware. As long as it is the same, you can flash it. If not you will get a brick.
3) My phone came with a sticker "Middle Eastern and African SIM only". Both slots work with German (and some other) SIMs as of now. Will this setting revert back and it will be locked to those SIMs, if I change CSC?
It didn`t happen to me.
4) If I will apply the Combination CSC from Sammobile , will I get access to every region-locked option without tripping knox?
I did as follows.
I flashed the DBT firmware from SamMobile and got myself a british code because it is a standard one in this Multi-CSC.
Knox not tripped. But VoLTE and VoWiFi still not working
Then I found the Combination ROM (FACTORY BINARY) with the same revision as the firmware (See question 2 about the "7").
I flashed it, dialed some USSD code. Then menu appeared from which I could choose the product code.
I chose DBT, wiped the data and cache and voila, I had a DBT phone with working VoLTE and VoWiFi otb.
Knox not tripped 0x0 !
Click to expand...
Click to collapse
Could you go into more detail, please? What USSD code did you dial?
Hello. I bought s21 fe but the strange thing that it's u2 model comes with binary 2 out of box and stuck at android 12 . Can I flash u1 model on it ?
G990U2 and SM-G990U3 : S21 FE variants with support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging.
so i think you can only flash G990U3 firmware ( U1 is without support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging )
Well, I am not absolutely sure about G990U2, but for S21, it is certainly possible to flash G991U1 to G991U. One of my friends did that (From XAA csc to SPR csc) and instantly got 4 pending updates till Jan'2023 one after another.
yakapa40 said:
G990U2 and SM-G990U3 : S21 FE variants with support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging.
so i think you can only flash G990U3 firmware ( U1 is without support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging )
Click to expand...
Click to collapse
G990U2 and G990U3 I'm totally confused with the model number because I have seen U and U1 model only . Actually my phone Is locked on t-mobile and the unlock price is high for binary 2 . It comes in binary 2 out of box . Is there any way to downgrade it to u3 or u2 binary 1
yakapa40 said:
G990U2 and SM-G990U3 : S21 FE variants with support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging.
so i think you can only flash G990U3 firmware ( U1 is without support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging )
Click to expand...
Click to collapse
I just flashed U3 on my G990U2 and now it has 2 imei both physical imei not esim but both imei are same . Can I use dual sim in it ? I don't have dual sim tray
i think you can't use dual SIM ( same IMEI )
yakapa40 said:
i think you can't use dual SIM ( same IMEI )
Click to expand...
Click to collapse
Same imei is not the problem . My question is this phone has dual sim hardware or not?
yakapa40 said:
i think you can't use dual SIM ( same IMEI )
Click to expand...
Click to collapse
It working . Both sim are working without any issue
can be flash U3 on SM-G990U?
also U3 and U2 support multi language ?
no you can only flash U3 on U2 or W2 ( QKEY4 SRPVC17A002 )
about U3 language :
mr.mgmg said:
can be flash U3 on SM-G990U?
also U3 and U2 support multi language ?
Click to expand...
Click to collapse
My phone was locked on t-mobile and got the remote unlocking service online he flashed 2 imei on it . After that I flash U3 on it and my started displaying it G990U3DS
yakapa40 said:
( U1 is without support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging )
Click to expand...
Click to collapse
Incorrect.
U1 is simply the USA unlocked version. And they do have NFC, dual-band wifi, wireless charging, etc.
Could anyone share how you did the the conversion between U1 and U or U3 to U2? Im trying to do B2 to B on europien version.
I have flash my METROPCS G990U2 to G990U3,other sim card work fine,but t mobile sim card does not work ,can someone help me?I already change CSC to xxa,but still no internet,I do have sginal bar
w9909989 said:
I have flash my METROPCS G990U2 to G990U3,other sim card work fine,but t mobile sim card does not work ,can someone help me?I already change CSC to xxa,but still no internet,I do have sginal bar
Click to expand...
Click to collapse
Whats the problem you are facing
jahanzaiblohani said:
Whats the problem you are facingits
Click to expand...
Click to collapse
jahanzaiblohani said:
Whats the problem you are facing
Click to expand...
Click to collapse
its fixed.I don't why at G990BU3/XAA my tmobile sim card have signal bar but no service, other sim work fine.so I flash my phone to G990U2 VERIZON, now my tmobile sim card work, thanks
w9909989 said:
its fixed.I don't why at G990BU3/XAA my tmobile sim card have signal bar but no service, other sim work fine.so I flash my phone to G990U2 VERIZON, now my tmobile sim card work, thanks
Click to expand...
Click to collapse
hi
I have the same problem can you please
w9909989 said:
its fixed.I don't why at G990BU3/XAA my tmobile sim card have signal bar but no service, other sim work fine.so I flash my phone to G990U2 VERIZON, now my tmobile sim card work, thanks
Click to expand...
Click to collapse
Hello
I have the same problem, I had metro PCs phone, I fully unlocked but the T-Mobile Sim didn't work, what Verizon firmware did you used? I been trying a lot of firmwares but I have error sha256 is invalid
Where you get the Verizon firmware G990u2 and how did you flash it?
Thank you
Try to flash the unlocked version XAA with patched Odin
jahanzaiblohani said:
Try to flash the unlocked version XAA with patched Odin
Click to expand...
Click to collapse
Thank you but it doesn't work
Can someone please point me to the right firmware to use , this one doesn't take TMobile Sim
Thank you