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Understanding the Japanese mobile background to use your SIM-Unlocked handset in JPN

If you want to use MMS with your own SIM-unlocked handset, see " [MMS][MOD] Mms.apk for any SoftBank (Japan) SIMs - JB Android 4.2.2 or newer only".
Availability of SMS in Japan
SoftBank - Available
EMobile (eAccess) (currently a part of SoftBank group) - Available
KDDI (au) - Available
NTT docomo - Available
Availability of MMS in Japan
SoftBank - Available (for both mobile phone numbers and email addresss)
EMobile (eAccess) - Available (for both mobile phone numbers and email addrsses)
KDDI (au) - Partially Available (for both mobile phone numbers and email addresses)
(KDDI's original and unique mailing system is used for Feature phones, like NTT docomo. MMS is used partially for Smartphones such as iPhone.)
NTT docomo - Not Available at all
(Because NTT docomo use their own original and unique mailing system such as crowd based "docomo mail", and/or "sp-mode mail" for Smartphones includling iPhone, and "i-mode mail" for Feature phones, instead of MMS)
Networks
Remark: so called "4G LTE" is not real 4G itself, but 3.9G or pre-4G. Real 4G is not LTE but LTE-Advanced.
2G (GSM) is not used in Japan at all. Previously PDC was used as 2G instead of GSM. PDC has been abolished already.
SoftBank: 3G - W-CDMA (900MHz, 2.1GHz), 4G - LTE (2.1GHz, 1.8GHz (identical with EMobile's 1.8GHz ), 900MHz will be added in April, 2014))
EMobile: 3G - W-CDMA (1.7GHz), 4G - LTE (1.8GHz (also used for SoftBank's "Double-LTE" service))
KDDI (au): 3G - CDMA2000 (800MHz, 2.1GHz), 4G - LTE (800MHz, 1.5GHz, 2.1GHz)
NTT docomo - 3G -W-CDMA (800MHz, 1.7GHz, 2.1GHz), 4G - LTE (800MHz, 1.5GHz,1.8GHz, 2.1GHz)
Unlocking the SIM-locked handsets which carriers (mobile phone operators) sold
SoftBank- Not Available at all
EMobile - Some handsets are unlocked initially, such as Nexus 5.
KDDI (au) - Not Available at all
NTT docomo - Available on smartphones except iPhone (The handling fee is JPY3,150.)

[Q] Where to buy a s6 edge unlocked and international?

As many of you may know, at&t verizon and the whole lot decided it'd be a great idea to delete apps like smart manager and preload their own bloatware. I see people on youtube from android authority and phone arena and such making first looks and tips&tricks videos and their phones seem like international unlocked versions.
I'm wondering if anyone here knows where I could go about purchasing one? I tried amazon but it came in yesterday and it was clearly fake so I shipped it back. If amazon is my only option, or ebay, do any of you know like...legitimate sellers/merchants from those sites that I can buy from? I really don't want to get it and return it again over and over. It's a hassle.
Thanks yall.

Check out Never MSRP that's where I bought a SM-G925F Global phone from. I recently switched to an international phone (SM-G920I). Both work on GSM networks like AT&T and T-Mobile. You just have to choose which specific radio bands is right for you. Also note that some are saying the I/F phones aren't carrier aggregated or fine tuned for major US carriers so your LTE speeds may not be quite on par as carrier specific devices. But for me my SM-G920I works great on T-Mobile. Anyhow there are other sellers out there but Never MSRP where very helpful with returns and fast with shipping.
Sent from my SM-G920I using XDA Free mobile app

www.clove.co.uk
If you are outside of the European Union then they will ship it at the VAT free price. They also offer the free option of removing the region lock by making the 5 minute call first.

s-one said:
Check out Never MSRP that's where I bought a SM-G925F Global phone from. I recently switched to an international phone (SM-G920I). Both work on GSM networks like AT&T and T-Mobile. You just have to choose which specific radio bands is right for you. Also note that some are saying the I/F phones aren't carrier aggregated or fine tuned for major US carriers so your LTE speeds may not be quite on par as carrier specific devices. But for me my SM-G920I works great on T-Mobile.
Sent from my SM-G920I using XDA Free mobile app
Click to expand...
Click to collapse
Had to remove all the links you included or it wouldn't let me reply/quote you. Anyways, I looked around and found out that the i version is for latam and this is what I found:
Also known as Samsung Galaxy S6 edge SM-G925
Available versions: SM-G9250 (China, HK), SM-G925A (AT&T), SM-G925F (Global), SM-G925FQ (Turkey), SM-G925I (LATAM, Singapore, India, Australia), SM-G925K (Korea), SM-G925L, SM-G925S (Korea), SM-G925T (T-Mobile)
It says that the i is latam, singapore and so on but you say that it's working well? How are your 4g speeds and stuff? Also what phone is the g920i that you're using and is there a particular reason you switched FROM the g925f global one? Because to me, it'd make more sense to have one that's global rather than one that's supposedly for latam/sing etc. Idk I'm very inexperienced with this stuff.

Hi ya no worries. The reason I switched from the "F" to the "I" was because others had mentioned there was a problem with the radios receiving LTE reception as good on networks such as AT&T when comparing side-by-side a provisioned model like the 925A. The "A" model is provisioned and tuned for the AT&T GSM network. The "F" model still got LTE but it would drop to 4G quicker than the "A" model while sitting right next to it. Being that the "I" model is almost the same as the "F", minus a couple of radio bands, some decided to shift to that one for GSM networks like AT&T. The LTE receptions were much better and I have to agree because I'm getting frequent LTE signals and great speeds on the GSM network T-Mobile.
So keep in mind that you have to see which models radio bands are compatible for the network you intend to use it on. The issue with the "F" model is specific to those who were trying to use it on the US GSM network such as AT&T but probably not an issue for the rest of the worlds GSM network.
Hope that helps.

s-one said:
Hi ya no worries. The reason I switched from the "F" to the "I" was because others had mentioned there was a problem with the radios receiving LTE reception as good on networks such as AT&T when comparing side-by-side a provisioned model like the 925A. The "A" model is provisioned and tuned for the AT&T GSM network. The "F" model still got LTE but it would drop to 4G quicker than the "A" model while sitting right next to it. Being that the "I" model is almost the same as the "F", minus a couple of radio bands, some decided to shift to that one for GSM networks like AT&T. The LTE receptions were much better and I have to agree because I'm getting frequent LTE signals and great speeds on the GSM network T-Mobile.
So keep in mind that you have to see which models radio bands are compatible for the network you intend to use it on. The issue with the "F" model is specific to those who were trying to use it on the US GSM network such as AT&T but probably not an issue for the rest of the worlds GSM network.
Hope that helps.
Click to expand...
Click to collapse
So what I'm getting is that although the f model is meant for international use and the i model is specifically for lat am, singapore and such, it still has better lte reception than the f model in the US?

Basically you are going to have to decide what bands your phone will be connected to in order to determine which model, the F or the I, would most benefit for you situation. The reception will be based on your vicinity or obstructions to the towers and any latency from those towers to your service providers network. So if your service provider uses bands 2 and 17 for their towers, then either F or I would work just the same.
Here are the LTE bands for each:
SM-G920F (Specifications link):
B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B17(700), B18(800), B19(800), B20(800), B26(800)
SM-G920I (Specifications link):
B1(2100), B2(1900), B3(1800), B5(850), B7(2600), B8(900), B12(700), B17(700), B18(800), B19(800), B26(800), B28(700) and B40(2300)
So the "I" is missing bands 4 and 20 from the "F" and adds band 40 that the "F" does not have.
Hope that clears it up.

s-one said:
Basically you are going to have to decide what bands your phone will be connected to in order to determine which model, the F or the I, would most benefit for you situation. The reception will be based on your vicinity or obstructions to the towers and any latency from those towers to your service providers network. So if your service provider uses bands 2 and 17 for their towers, then either F or I would work just the same.
Here are the LTE bands for each:
SM-G920F (Specifications link):
B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B17(700), B18(800), B19(800), B20(800), B26(800)
SM-G920I (Specifications link):
B1(2100), B2(1900), B3(1800), B5(850), B7(2600), B8(900), B12(700), B17(700), B18(800), B19(800), B26(800), B28(700) and B40(2300)
So the "I" is missing bands 4 and 20 from the "F" and adds band 40 that the "F" does not have.
Hope that clears it up.
Click to expand...
Click to collapse
Ahh I see. Sht I'm missing out on band 4 then ...ohwell as long as I have 4g. whatever. Thanks a lot man

ohsoasn said:
As many of you may know, at&t verizon and the whole lot decided it'd be a great idea to delete apps like smart manager and preload their own bloatware. I see people on youtube from android authority and phone arena and such making first looks and tips&tricks videos and their phones seem like international unlocked versions.
I'm wondering if anyone here knows where I could go about purchasing one? I tried amazon but it came in yesterday and it was clearly fake so I shipped it back. If amazon is my only option, or ebay, do any of you know like...legitimate sellers/merchants from those sites that I can buy from? I really don't want to get it and return it again over and over. It's a hassle.
Thanks yall.
Click to expand...
Click to collapse
Hi there, I just bought the "I" version on swappa, the 64 gb for $700. There's a guy from Puerto Rico with awesome 'deals'. I You should look for it.

SM G925 and SM G925f
s-one said:
Basically you are going to have to decide what bands your phone will be connected to in order to determine which model, the F or the I, would most benefit for you situation. The reception will be based on your vicinity or obstructions to the towers and any latency from those towers to your service providers network. So if your service provider uses bands 2 and 17 for their towers, then either F or I would work just the same.
Here are the LTE bands for each:
SM-G920F (Specifications link):
B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B17(700), B18(800), B19(800), B20(800), B26(800)
SM-G920I (Specifications link):
B1(2100), B2(1900), B3(1800), B5(850), B7(2600), B8(900), B12(700), B17(700), B18(800), B19(800), B26(800), B28(700) and B40(2300)
So the "I" is missing bands 4 and 20 from the "F" and adds band 40 that the "F" does not have.
Hope that clears it up.
Click to expand...
Click to collapse
OFF - TOPIC
pls i need your help friends Whats the difference between SM G925 and SM G925f? A friend bought SM G925 from Dubai for me to be used in Africa(Nigeria)? SM G925f is the model been sold here.
Can the phone be used here without unlocking?
Would it be region locked?
Would it be differnt from SM G925f?
Would i encounter problems using it?
Would there support(here on xda developers) and other sites for it?
Would i receive timely updates from Samsung directly?
Pls i do really need you guys to help out with answers asap as he is coming home on Monday
Thanks loads

I picked up a sm-g920s while i was vacationing in south Korea for $600 tax free cash. Brand new, sealed, and I've used tools to verify its authenticity. Unfortunately i did not do enough research on the bands when i bought it. Got back, got a t-mobile sim and can't even get 4G or LTE. So now only on their 3G network. Waiting on custom ROMs to come out to remove the bootloader SK Telecom has on the phone. I've rooted the device, but the bootloader prevents me from accessing their hidden menus to change the network bands. All our phones can work on all bands, but you just have to enable them and overide the service providers customization.
Sent from my SM-G920S using XDA Free mobile app

pls i need ur help urgently
stevemiddie said:
www.clove.co.uk
If you are outside of the European Union then they will ship it at the VAT free price. They also offer the free option of removing the region lock by making the 5 minute call first.
Click to expand...
Click to collapse
pls i need your help friends Whats the difference between SM G925 and SM G925f? A friend bought SM G925 from Dubai for me to be used in Africa(Nigeria)? SM G925f is the model been sold here.
Can the phone be used here without unlocking?
Would it be region locked?
Would it be differnt from SM G925f?
Would i encounter problems using it?
Would there support(here on xda developers) and other sites for it?
Would i receive timely updates from Samsung directly?
Pls i do really need you guys to help out with answers asap as he is coming home on Monday
Thanks loads

LG or HTC Dual SIm for UK (Voda & EE)

Hi everyone
Last year I bought the fabulous LG G3 Dual Sim from Hong Kong (H858HK), I was pissed when I got home as it does not work on 4G like it did in HK and it will not update over OTA :/
I have rooted it (Of course) and it's running 5.1 but updates and custom Roms are scarce or invisible lol
So now I am looking to upgrade BUT I want a phone that works on 4G as my Voda business tariff includes 5Gb on 4G so my as well use it right ?
I am looking through all the bumf and it seems the LG G4 H818P will not work in the UK on 4G, not sure about the H818P and the HTC ONE E9+
Can anyone please help shed some light on this for me?
I need a dual sim phone that will work on Vodaphone and if poss EE too
Specs for H818N are here, bit not sure which 4G Vodaphone uses as it says 800Mhz on their website :/
http://www.lg.com/hk_en/mobile-phones/lg-H818N
FDD: 2100(B1) / 1800(B3) / 2600(B7) MHz TDD:2600(B38) / 1900(B39) / 2300(B40) / 2500(B41) MHz
HTC says
4G bands LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 28(700), 38(2600), 39(1900), 40(2300), 41(2500)
SO am I right in thinking the LG is no good, but HTC ONE will be fine?
Thanks for any help & advice

You will get lots of opinions here, http://forum.xda-developers.com/showthread.php?t=1620179
I'll close this thread. :good:
Darth
Forum Moderator

[How To][Guide] Att Apn List (Not my werk)

Original Post Thread found HERE
This is a guide for changing your apn for throttling issues or trying to get a better signal.
Here's a list of the ATT APN list that I put together. I have tested these some work with everything DATA,LTE,MMS,VOICE, ETC. And some of them were request from other members here. So I just posted what was asked for into one location. If they work for you keep them if not, just delete and keep the ones you'll b using. NEVER DELETE THE STOCK APN JUST IN CASE!
If I run across any others I sure to add them here.
If anyone has any that I missed let me know and I'll add them to the list...
#1.Go into setting, then more setting, mobile networks, then pick Access point Names.
#2. In order to enter a new APN, hit the left menu key. Pick New APN, then enter your APN setting as listed below. After that hit Menu again then save! Then you can select that Apn, by hitting the dot next to the new apn
Everyone's results will vary, pending on location...
You will find all APN settings at link provided above...

Moto G4 is not compatible with all LTE bands. You can see that here http://willmyphonework.net/
I did check with AT&T and learned that the missing bands are being discontinued and only available in few areas. I have had no problems in my area.
Now my plan includes throttling after the data I've signed up for, 10gb/family. If someone finds an APN that avoids that throttling, please list it.

king200 said:
Moto G4 is not compatible with all LTE bands. You can see that here http://willmyphonework.net/
I did check with AT&T and learned that the missing bands are being discontinued and only available in few areas. I have had no problems in my area.
Now my plan includes throttling after the data I've signed up for, 10gb/family. If someone finds an APN that avoids that throttling, please list it.
Click to expand...
Click to collapse
I use straight talk 45 dollars unlimited t/t/d plan which uses att.

I'm on T-Mobile so I have no issues. If the APN Setting you need is at the link, great, if not I tried. Can't help everyone but I thought it might help some....
*Edit*
I'm on the $95 Unlimited LTE plan

Every carrier that allows for BYOD has a link with their APN settings on the official website. Anyway 90% of the time the APN settings are downloaded via a SMS message, no need for manual config.
My Moto G4 Plus worked automatically on MetroPCS, T-Mobile, CricketWireless (all USA) and Vodafone (Spain).
Also, that link with "will it work" does not have the correct information for the US version of the G4 or G4 Plus. Both those phones have all the LTE bands needed in US (including AT&T and T-Mobile) and the important ones in EU.
That is LTE bands 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 25(1900), 26(850), 41(2500).

General 5G APN Collection

Warning:
Setting an APN will NOT make 5G work if your carrier does not support your hardware frequencies. These are carrier settings, not magic beans.​
T-Mobile (US)
APN NameT-Mobile USAPNfast.t-mobile.comProxyNot setPortNot setUsernameNot setPasswordNot setServer*MMSChttp://mms.msg.eng.t-mobile.com/mms/wapencMMS ProxyNot setMMS PortNot setMCC310MNC260Authentication TypeNot setAPN Typedefault,supl,hipri,fota,mmsAPN ProtocolIPv6APN Roaming ProtocolIPv4BearerUnspecifiedMVNO TypeNoneMVNO ValueNot set
AT&T (US)
APN NameAPNNXTGENPHONE
or
enhancedphone
or
phoneProxyNot setPortNot setUsernameNot setPasswordNot setServerNot setMMSChttp://mmsc.mobile.att.netMMS Proxyproxy.mobile.att.netMMS Port80MCC310MNC410
or
280Authentication TypeNoneAPN Typedefault,mms,supl,hipriAPN ProtocolIPv4
or
IPv4/IPv6APN Roaming ProtocolIPv4
or
IPv4/IPv6BearerUnspecifiedMVNO TypeNone
or
GIDMVNO Value
or
53FF
If you have 5G service and your carrier is not listed, please make sure to include the name and country with the APN configuration details.
If you would like to request any changes or additions, please include the name and updated info ONLY. Do NOT list the entire APN details.
T-Mobile: https://www.t-mobile.com/support/de...vl-5g/network-apn-and-volte-t-mobile-revvl-5G
AT&T: https://www.att.com/support/article/wireless/KM1062162/

Reserved for third-party carrier settings (Cricket, StraightTalk, etc)

No 5G on AT&T

TawkinTrash said:
No 5G on AT&T
Click to expand...
Click to collapse
I don't really know what to do with that, but thanks.

twistedumbrella said:
I don't really know what to do with that, but thanks.
Click to expand...
Click to collapse
Pardon me kind sir, but I am emphatically professing that there is no 5G for the ROG Phone 5 on the AT&T cellular network.

TawkinTrash said:
Pardon me kind sir, but I am emphatically professing that there is no 5G for the ROG Phone 5 on the AT&T cellular network.
Click to expand...
Click to collapse
Many thanks, gracious visitor, but I have not the means to rectify this for you.

Some have reported getting 5G on ATT with these difference in the VPN:
APN Protocol: IPv4/IPv6
APN Roaming Protocol: IPv4/IPv6
MVNO Type: GID
MVNO Value: 53FF
I unfortunately am not one of those few. This is from users I have spoken to here and FB. YRMV