Develop Bugs

T800 or T805

Hello,
given that:
(i) where I live the LTE version has similar or significantly lower prices than that Wi-Fi version, since it goes more often on sale
(ii) I do not plan to use LTE at all, I would be fine with a Wi-Fi only tablet;
(iii) I am not interested in replacing the stock ROM during the first one or two years of use;
(iv) I am a bit worried about the inferior custom ROM compatibility and support for the LTE version;
would it be justified to spend more for the Wi-Fi version only to gain a better custom ROM compatibility in the future?
Also I do not understand if T800 ROMs will work on the T805 apart from the LTE functionality.
I am quite undecided so I hope to get some advice.
Thank you in advance

Most custom t800 roms work just fine on the t805.
There are plenty of t805 roms available anyway.
I don't really understand what people want when they say custom rom or what they are actually expecting.
The stock rom can be modified and tweaked to suit most.

Custom roms are really not that necessary, I usually have more problems with them than anything else. Your main focus should be xposed compatibility and unlocked bootloaders. For example, if you're going to get a LTE version you need to make sure you get it from a known carrier that does not lock bootloader (such as t-mobile). Since you have no plans to use the LTE, make the smart decision of buying one that isn't locked.
Also, the LTE version uses Qualcomm processors, which means in theory it would have the best compatibility in applications because a significant chunk of Android uses Qualcomm in other brands.
Personally I went with the wifi only, because it was cheaper and it was only slightly slower than the LTE version.

Most LTE devices are Exynos not Snapdragon, in fact I'm not sure any of the 8.4 LTE models use Snapdragon.
Only the Sprint LTE model uses Snapdragon and that doesn't have a locked bootloader.

Anyone else considering the N9750 version for use instead of the N975F?

Question is the same as the title, are there other users on XDA who have considered upgrading or buying the Snapdragon Dual Sim Note 10+ over the N975F?. I am aware of the general uniqueness of the Hong Kong/Latin American/Brazilian Snapdragon devices as they have unlocked bootloaders compared to their US and Canadian counterparts. I've been doing research on these phones ever since I knew of the existence of the HK Note 8.
Development wise these N9xx0 devices don't see much development due to the rarity/relative uniqueness of these versions, but I was curious if anyone was checking for this to use instead of the Exynos Note 10+ in the US, Canada, UK, Australia and the rest of the world. I'm particularly interested in hearing from people on AT&T, T-Mobile and their respective MVNOs as I am considering getting this one to use on MetroPCS. In terms of bands I wonder if it will work out of the box similar to a user who had his Hong Kong S10+ work on T-Mobile with Wi-Fi calling/VoLTE even with the TGY CSC.

If they have an oem Bootloader Unlock like the S10's did I will definitely be getting that model over the F. There is still a shocking distance between the two chips in benchmarks, the snapdragon versions performing 20% better than the exynos versions. I will hold out for some extended use testing to come out, but it seems unlikely to change the data much. I need as much performance as I can get from my chip, and I don't really need custom roms to achieve a smooth workflow or customized experience.
---------- Post added at 11:21 PM ---------- Previous post was at 11:06 PM ----------
BTW I don't worry much about bands with any of the new flagships coming out. You can verify on frequency checker, but most phones these days come with the same modems in all models. My last phone was a Chinese model Mate 20 X and it had no problem with international roaming on Google fi and got 4g on any chip I threw at it.

Idont know where you plan to use your device, but in many forums of other samsung devices, people getting devices from other countries, have sometimes problems regarding bands, carrier services, software updates, and most important no way to claim warranty

Mainland China = SG chip / 5G / 256gb / dual sim / limited bands
Hong Kong = SG chip / LTE only / 512gb / dual sim / limited bands
US unlocked = SG chip / LTE only / 512gb / single sim / full bands
In my case, I want dual sim but HK version doesn’t have LTE 66 and 71 which T-Mobile uses. So I am still debating.

NoteSeriesEnthusiast27 said:
Question is the same as the title, are there other users on XDA who have considered upgrading or buying the Snapdragon Dual Sim Note 10+ over the N975F?. I am aware of the general uniqueness of the Hong Kong/Latin American/Brazilian Snapdragon devices as they have unlocked bootloaders compared to their US and Canadian counterparts. I've been doing research on these phones ever since I knew of the existence of the HK Note 8.
Development wise these N9xx0 devices don't see much development due to the rarity/relative uniqueness of these versions, but I was curious if anyone was checking for this to use instead of the Exynos Note 10+ in the US, Canada, UK, Australia and the rest of the world. I'm particularly interested in hearing from people on AT&T, T-Mobile and their respective MVNOs as I am considering getting this one to use on MetroPCS. In terms of bands I wonder if it will work out of the box similar to a user who had his Hong Kong S10+ work on T-Mobile with Wi-Fi calling/VoLTE even with the TGY CSC.
Click to expand...
Click to collapse
I'm using N975F and it has dual sim

UK Exynos SoC

Hi all
I just realised that my Samsung UK Note 10+ is not using Snapdragon 855 but the Exynos 9825. I thought the Exynos CPU is only available in Canada and the far east.
I have to say, if I knew that Samsung were selling the Exynos edition on their website I wouldn't have ordered it. I'm afraid to ask if I'm missing anything as I was under the impression that the Exynos are inferior to the Snapdragon CPUs.

Exynos is the European chip.
Sent from my SM-N975F using Tapatalk

Snapdragons are mainly gor USA, Canada and Hong Kong, because of some country/carrier regulations, the rest of the world use exynos, which are somewhat "inferior" in some areas, not all, mainly batt usage, as for performance, side by side the difference is really little

winol said:
Snapdragons are mainly for USA, Canada, and Hong Kong, because of some country/carrier regulations, the rest of the world use exynos, which are somewhat "inferior" in some areas, not all, mainly batt usage, as for performance, side by side the difference is really little
Click to expand...
Click to collapse
I believe it's the other way around in the best case. Battery usage is almost the same (They claim SD to have better standby drain, but I can't tell). While performance is way better on the SD, especially in gaming where the Adrino graphics processor performs much better than the Mali.

What's wrong with the Exynos variants ?
I'm in the UK and my S8+ / Note 9 where both Exynos and there was absolutely no perceivable difference after years of using a SD powered device.
Frankly not getting a device because of the processor difference between SD / Exy is just pure arrogance / stupidity.
Both vairents are Rootable so people can't even argue that anymore.

I agree with you, exynos variants are indeed excellent, SD versions may be slightly better, but not as to despise Exynos ones

hutzdani said:
What's wrong with the Exynos variants ?
I'm in the UK and my S8+ / Note 9 where both Exynos and there was absolutely no perceivable difference after years of using a SD powered device.
Frankly not getting a device because of the processor difference between SD / Exy is just pure arrogance / stupidity.
Both vairents are Rootable so people can't even argue that anymore.
Click to expand...
Click to collapse
Battery drain on the Exynos variant is a fact. I have both versions of the phone and with SD I have far better cellular reception and WiFi and less to non battery drain on standby.
I live in London.
Sent from my SM-N9750 using Tapatalk

geovass said:
Battery drain on the Exynos variant is a fact. I have both versions of the phone and with SD I have far better cellular reception and WiFi and less to non battery drain on standby.
I live in London.
Sent from my SM-N9750 using Tapatalk
Click to expand...
Click to collapse
Can I ask if the SD Note 10+ gets OTA updates in the UK and (at least) Google Pay works?
There are some reasonably priced handsets on eBay, mostly from Switzerland that look quite attractive (4G variants),
TIA

mzm70 said:
Can I ask if the SD Note 10+ gets OTA updates in the UK and (at least) Google Pay works?
There are some reasonably priced handsets on eBay, mostly from Switzerland that look quite attractive (4G variants),
TIA
Click to expand...
Click to collapse
Yes and yes!
I got it from an eBay seller - shipped from Swiss
Sent from my SM-N9750 using Tapatalk

Which S20? Europe/exynos or HK/Snapdragon?

I live in Greece. Based on all I've read, the exynos S20 isn't as good as the snapdragon version for battery (my #1 issue), general performance, and graphics. I can get a pretty decent price on the HK one. It supports all the bands Vodafone-Greece uses, and it comes with 12gb ram (instead of 8gb) and some 5G ability. 5G won't exist here for a while, so that's unimportant to me. Normally, the no-brainer answer is to buy the HK S20, but I am already aware that Samsung Greece will not honor the warranty because it's from a non-EU region (thought I think there is a recent EU law that says they must). So, a couple of questions before I make a purchase:
- What won't work in Europe, like VOLTE?
- Will I get the normal OTA updates (Android 11 and security patches) or will I have to download and install the firmwares updates myself

corvus.corax said:
I live in Greece. Based on all I've read, the exynos S20 isn't as good as the snapdragon version for battery (my #1 issue), general performance, and graphics. I can get a pretty decent price on the HK one. It supports all the bands Vodafone-Greece uses, and it comes with 12gb ram (instead of 8gb) and some 5G ability. 5G won't exist here for a while, so that's unimportant to me. Normally, the no-brainer answer is to buy the HK S20, but I am already aware that Samsung Greece will not honor the warranty because it's from a non-EU region (thought I think there is a recent EU law that says they must). So, a couple of questions before I make a purchase:
- What won't work in Europe, like VOLTE?
- Will I get the normal OTA updates (Android 11 and security patches) or will I have to download and install the firmwares updates myself
Click to expand...
Click to collapse
Whether or not you'll get VoLTE, WiFi Calling depends on the carrier. In some cases CSR's for Carrier Branded devices will say none of their features will work as they want potential customer's to purchase their device but that's not always the case. You won't know for certain until you test your device on their network. If the service provider's features are a priority then your best option is aquire their smartphone, you'll know they'll work. If you buy their Exynos device and it overheats or has fast battery drain you can return it under warranty for replacement or a refund. As much as we read about Exynos pitfalls there are many users who are pleased with the performance and have no issues. A lot of concerns come from users who put heavy workloads on their processers like gaming so it depends on your individual usage. I decided on the HK variant because most carrier features I can live without and I enjoy gaming. VoLTE and WiFi Calling features work on my T-Mobile's network, I also have access to Samsung Pay. Be aware you can't flash your service provider's firmware on a Snapdragon variant. You likely won't have some Carrier Aggeration like fast download speeds. You will get OTA Updates since they're distributed by Samsung, not your service provider.

Thank you for the thoughtful reply. Here in Greece, Vodafone doesn't currently support VOLTE or WiFi calling. I haven't used Samsung Pay up till now, but my bank doesn't support it, only Apple Pay & Google Pay, so not a big inconvenience. As to carrier aggregation, do you know why that wouldn't be fully supported and does your remark apply to 4G or just 5G? Does it have to do with the particular chipset & modem?

After all updates on Exynos, it performs great. No heating uo and battery life improved a lot.

djoxie said:
After all updates on Exynos, it performs great. No heating uo and battery life improved a lot.
Click to expand...
Click to collapse
Same experience here (s20+ exynos variant) i wouldnt risk buying from grey market as you may get unit with poor oled uniformity and then be stuck with it

djoxie said:
After all updates on Exynos, it performs great. No heating uo and battery life improved a lot.
Click to expand...
Click to collapse
That's good to know.

SM-G988N CSC bypass for UK location?

Hi everyone,
I got a S20 Ultra (Korean version) as it was one of the few with Snapdragon to work on UK bands but I am struggling to trick the phone to show me content in english on native apps (Samsung Daily, Weather, Members app...).
Don't get me wrong, the initial content is in english but once you try and get more info, about the weather for example, it takes me to a korean website. Members is in Korean all around and daily has Korean cards inside.
Which I think is normal due to the Korean CSC.
I changed the CSC from SKT to KOO but it only removed the network branding and default carrier apps.
Is there a way to bypass the CSC or install an English CSC from UK for example?

did you find how to change it ?

Also have the same issue. I am in Australia. I was thinking about installing australian firmware?

I have an SM-G9860, which is the Hong Kong S20+, and live in Romania. Anyway, I'm pretty much in the same boat as you, having the TGY csc instead of ROM or ORO. Samsung Weather sends me to samsung internet to accuweather.com, which is just what my old exynos s10+ would do, and samsung daily seems about normal, with only the spotify recommendations card showing something in chinese. On the other hand, Samsung Members, which had been acting like I was living in Hong Kong (showing me the offers from there and so on), has, since a few days ago, started showing me content from Romania. Upon randomly launching it last week, it gave me a message as such: "App might reset due to regional settings change" or something like that. My csc is still TGY and samsung pay for instance still is the hk variant. Other than that everything is pretty normal.

Thats why I was asking if its possible to dowbload firmware for the Australian version of the S20 Ultra which is not snapdragon (the reason I bought Korean version because it is snapdragon). Will things still function as normal if I put on Australian firmware that is designed for a korean phone? Sammobile has the firmware for all countries spec phones.

simonriadis said:
Thats why I was asking if its possible to dowbload firmware for the Australian version of the S20 Ultra which is not snapdragon (the reason I bought Korean version because it is snapdragon). Will things still function as normal if I put on Australian firmware that is designed for a korean phone? Sammobile has the firmware for all countries spec phones.
Click to expand...
Click to collapse
No. Quite simply put: You can only flash Firmware intended for that specific handset.
For example: I own the SM-G9880, which is the (snapdragon 865) Asian version of the S20 Ultra 5G.
I can only flash three firmwares: TGY (Hongkong), BRI (Taiwan) and CHC (China "open"). NO other firmware. Certainly not, say, the EU Firmware, which is for another CPU entirely (Exynos 990)

Roman9814 said:
No. Quite simply put: You can only flash Firmware intended for that specific handset.
For example: I own the SM-G9880, which is the (snapdragon 865) Asian version of the S20 Ultra 5G.
I can only flash three firmwares: TGY (Hongkong), BRI (Taiwan) and CHC (China "open"). NO other firmware. Certainly not, say, the EU Firmware, which is for another CPU entirely (Exynos 990)
Click to expand...
Click to collapse
Thanks Roman. For example I cant use Samsung Pay because it says 'cards must be from Korea'. And a few other things of that nature.
Firmware of a US s20 Ultra running Snapdragon chipset wouldn't work either?

simonriadis said:
Thanks Roman. For example I cant use Samsung Pay because it says 'cards must be from Korea'. And a few other things of that nature.
Firmware of a US s20 Ultra running Snapdragon chipset wouldn't work either?
Click to expand...
Click to collapse
The same way I can't use it because I'd need a card from Hong Kong, but I just use GPay instead, works like a charm. Nope, nothing, I'm afraid. You can only flash the Firmware intended for that specific model number. I am in a slightly different conundrum - I got the SM-G9880, and I'm using it in Europe. While LTE and 5G bands are similar, they aren't identical. LTE, it's barely noticeable, since 1,3,7 and multiple others are supported, 1,3 and 7 work in 4x4 MIMO and the most important Carrier Aggregation Combos like 7-3-3-1 (12) work too. Only thing I don't have is CA with Band 20 (only supported in single mode) and on the LTE side that's basically it - I even have 28-7-3-1. However, 5G wise, different story. Only Bands I got for the EU are N1 and N78, which luckily is exactly what my carrier uses, but there might be N3 and N28 down the road like in other EU countries so it'd be nice to have that...

Roman9814 said:
The same way I can't use it because I'd need a card from Hong Kong, but I just use GPay instead, works like a charm. Nope, nothing, I'm afraid. You can only flash the Firmware intended for that specific model number. I am in a slightly different conundrum - I got the SM-G9880, and I'm using it in Europe. While LTE and 5G bands are similar, they aren't identical. LTE, it's barely noticeable, since 1,3,7 and multiple others are supported, 1,3 and 7 work in 4x4 MIMO and the most important Carrier Aggregation Combos like 7-3-3-1 (12) work too. Only thing I don't have is CA with Band 20 (only supported in single mode) and on the LTE side that's basically it - I even have 28-7-3-1. However, 5G wise, different story. Only Bands I got for the EU are N1 and N78, which luckily is exactly what my carrier uses, but there might be N3 and N28 down the road like in other EU countries so it'd be nice to have that...
Click to expand...
Click to collapse
no .. sorry ..
i still think its only the CSC ..
if i know how to modify the CSC_OMC_OKR_G988NOKR1BTI3_CL19654513_QB34370104_REV00_user_low_ship_MULTI_CERT.tar ....
like i can see carriers/KTC and only Korea ...
i just don't know how to modify the file like how to unpack and repack so i can flash it i search for a guide but nothing on google or here in XDA