Develop Bugs

[Q] 3G NOT working on International Unlocked Version!

I bought the unlocked version (R800i) and im using it on a latinamerican network (MOVISTAR COLOMBIA) which is a GSM carrier but i can not get 3G speeds. Does it have to do with the supported bands? How can i change my supported bands?

BTW: This carrier works with GSM 850/1900 bands and according ro GSM arena it supports the following bands:
-2G Network: GSM 850 / 900 / 1800 / 1900
-3G Network: HSDPA 900 / 2100
HSDPA 850 / 1900 / 2100 / 800

Have you set up your apn settings
Sent from my HTC Amaze 4G using xda premium

The r800i only have 3g 900 and 2100 hsdpa ...the 850 MHz hsdpa is only disponible in r800a and r800at model. Dont work 3g with your operator. Sorry the bad english.
Sent from my R800a using XDA App

jrhardware said:
The r800i only have 3g 900 and 2100 hsdpa ...the 850 MHz hsdpa is only disponible in r800a and r800at model. Dont work 3g with your operator. Sorry the bad english.
Sent from my R800a using XDA App
Click to expand...
Click to collapse
I think what he's trying to say is you bought the wrong model.. Sorry dude.

hi guys having the same issue.
i have Xperia Play (R800i) running on Telekom (Slovakia). I asked folks over there on what frequency is their 3G running, they told me that 1800.
Does it mean that i will have just 2G (Edge) available if in my paper is UMTS HSPA Band 1 8 GSM GPRS/EDGE 850/900/1800/1900?
Telekom offered this mobile in the end of 2011 so I am curious whether they would offer mobile with no 3G capability.
Thanks

R800i: GSM (2G) 850 / 900 / 1800 / 1900, HSDPA (3G) 900 / 2100
R800at: GSM (2G) 850 / 900 / 1800 / 1900, HSDPA (3G) 850 / 1900 / 2100 / 800
The R800i will not work with 850 and 1900 bands. You can't change the support band, you'll have to buy a different phone. It is hardware limitation btw, if you flash R800at firmware and baseband to your R800i, it will not make it work.

eksasol said:
R800i: GSM (2G) 850 / 900 / 1800 / 1900, HSDPA (3G) 900 / 2100
R800at: GSM (2G) 850 / 900 / 1800 / 1900, HSDPA (3G) 850 / 1900 / 2100 / 800
The R800i will not work with 850 and 1900 bands. You can't change the support band, you'll have to buy a different phone. It is hardware limitation btw, if you flash R800at firmware and baseband to your R800i, it will not make it work.
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Click to collapse
thanks for your reply, if my provider is telling that its 3G is running at 1800 Mhz, it should run right? currently i am running just 2G :/ and even when carrier selection i have just 2g shown. Can it be SIM related? i have changed mine a week ago.
Edit: just checked in TMobile that lady ran my SIM on her phone and H appeared. it has to be phone related somehow.
how can i find out whether my 800i wasnt transfered from some at, a version?
I talked do Data centre and R800i was in one of the action of Telekom , when i select only WCDMA, i lose any access to the service, carrier told me that it has to do something with the phone.
I guess that there were 3G and 4G versions of Play, not the version without 3G

They already told you: You bought the wrong model.
The R800i will not work with 850 and 1900 bands. You can't change the support band, you'll have to buy a different phone. It is hardware limitation btw, if you flash R800at firmware and baseband to your R800i, it will not make it work.
Perhaps all problems will be solved at once if you bought the correct model?!

Thaevil0ne said:
They already told you: You bought the wrong model.
The R800i will not work with 850 and 1900 bands. You can't change the support band, you'll have to buy a different phone. It is hardware limitation btw, if you flash R800at firmware and baseband to your R800i, it will not make it work.
Perhaps all problems will be solved at once if you bought the correct model?!
Click to expand...
Click to collapse
i havent mentioned 850 and 1900 bands. I am not located in US. My carriers 3G network is running at 1800 Mhz.

triscene said:
i havent mentioned 850 and 1900 bands. I am not located in US. My carriers 3G network is running at 1800 Mhz.
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Click to collapse
The 1800 is listed under both R800i & R800at as 2G frequency. I hate to say it but as its been stated already in this thread you bough the wrong model.
Eskasol:
"R800i: GSM (2G) 850 / 900 / 1800 / 1900,
HSDPA (3G) 900 / 2100
R800at: GSM (2G) 850 / 900 / 1800 / 1900,
HSDPA (3G) 850 / 1900 / 2100 / 800

ozzmanj1 said:
The 1800 is listed under both R800i & R800at as 2G frequency. I hate to say it but as its been stated already in this thread you bough the wrong model.
Eskasol:
"R800i: GSM (2G) 850 / 900 / 1800 / 1900,
HSDPA (3G) 900 / 2100
R800at: GSM (2G) 850 / 900 / 1800 / 1900,
HSDPA (3G) 850 / 1900 / 2100 / 800
Click to expand...
Click to collapse
yep, this is what i wanted to confirm
is there any verion of Xperia Play running 3G on 1800 Mhz?

[Q] Understanding carriers network bands

The article below came up today explaining how T-Mobile network improvements will make it possible for canadian iPhone users to not only have to rely on AT&T when roaming in the US.
http://mobilesyrup.com/2013/03/26/f...e-how-t-mobiles-lte-network-affects-canadians
Looking at the specs of our i747(m) from this link below, the device supports the following bands :
2G - GSM 850 / 900 / 1800 / 1900
3G - HSDPA 850 / 1900 / 2100
4G - LTE 700 MHz Class 17 / 2100
Now, where does AWS stand in all of this and if a carrier rolls out a non-AWS LTE network, what other standards/protocols are available ?
What about UMTS?
Moreover, why are our phones called "pentaband phones" when, from the list above, the phone actually support 9 bands ( 4 2G bands + 3 3G bands + 2 LTE bands = 9 bands total)
Trying to make sense of all this but it just doesn't add up
Thanks in advance

[Q] Question about M919 for Canadian users

I'm live in Canada, so yea this is regarding Canadian Purchasing M919(T-Mobile S4).
intro：1. Bell HSPA 850/1900, LTE Band 4 (AWS), Band 7 (2600)
2. Rogers GSM 850/1900, HSPA 850/1900, LTE Band 4 (AWS), Band 7 (2600)
3. Telus HSPA 850/1900, LTE Band 4 (AWS)
4. Virgin HSPA 850/1900, LTE Band 4 (AWS)
5. Koodo HSPA 850/1900, LTE Band 4 (AWS)
6. Wind HSPA (AWS or 1700/2100MHz)
7. Mobilicity HSPA (AWS or 1700/2100MHz)
8. Seven-Eleven GSM 850/1900, HSPA 850/1900
M919 T-Mobile Galaxy S4...
http://negrielectronics.com/samsung...mobile-unlocked-white-frost.html#.UYKbUCv07w4
Supports:
GENERAL2G NetworkGSM 850 / 900 / 1800 / 1900
3G NetworkHSPA 850 / 1700 / 1900 / 2100
4G NetworkLTE 700 / 850 / 1700 / 1900 / 2100 / 2600
Canadian Carriers, mainly two types.
A - Bell, Rogers, Telus, Virgin, Koodo and etc.
B - Wind and Mobilicity and etc.
2G Same for A and B.
3G/H+ 850/1900 for A and 1700/2100 for B
4G/LTE 1700/2100/2600 for A and N/a for B
M919 seems perfect for Canadian users..
ps. Seems M919 works perfect for ATT networks as well...
Can anyone confirm about this?
and is T-mobile come with a unlocked bootloader?
If this is true... T-mobile would definitely have more sells (maybe just for the phone...:fingers-crossed

You're right
niceppl said:
I'm live in Canada, so yea this is regarding Canadian Purchasing M919(T-Mobile S4).
intro：1. Bell HSPA 850/1900, LTE Band 4 (AWS), Band 7 (2600)
2. Rogers GSM 850/1900, HSPA 850/1900, LTE Band 4 (AWS), Band 7 (2600)
3. Telus HSPA 850/1900, LTE Band 4 (AWS)
4. Virgin HSPA 850/1900, LTE Band 4 (AWS)
5. Koodo HSPA 850/1900, LTE Band 4 (AWS)
6. Wind HSPA (AWS or 1700/2100MHz)
7. Mobilicity HSPA (AWS or 1700/2100MHz)
8. Seven-Eleven GSM 850/1900, HSPA 850/1900
M919 T-Mobile Galaxy S4...
http://negrielectronics.com/samsung...mobile-unlocked-white-frost.html#.UYKbUCv07w4
Supports:
GENERAL2G NetworkGSM 850 / 900 / 1800 / 1900
3G NetworkHSPA 850 / 1700 / 1900 / 2100
4G NetworkLTE 700 / 850 / 1700 / 1900 / 2100 / 2600
Canadian Carriers, mainly two types.
A - Bell, Rogers, Telus, Virgin, Koodo and etc.
B - Wind and Mobilicity and etc.
2G Same for A and B.
3G/H+ 850/1900 for A and 1700/2100 for B
4G/LTE 1700/2100/2600 for A and N/a for B
M919 seems perfect for Canadian users..
ps. Seems M919 works perfect for ATT networks as well...
Can anyone confirm about this?
and is T-mobile come with a unlocked bootloader?
If this is true... T-mobile would definitely have more sells (maybe just for the phone...:fingers-crossed
Click to expand...
Click to collapse
I found this information at Samsung USA website, but I think the Canadian variant (M919V) will be the same. The M919 for T-Mobile has those frequencies:
LTE: Bands 700 / 850 / AWS 1700 / 1900 / 2100 / 2600 ; HSPA+/UMTS: 850 / AWS 1700 / 1900 / 2100MHz; GSM: 850/900/1800/1900MHz

The T-Mobile phone will work no problem. I've posted the numbers elsewhere and they all match up.
However, Koodo is selling it for $625 outright and the other companies for $700, so the T-Mobile one is not any cheaper. All Canadian versions have an unlocked bootloader.

[Q] Sprint M8 only using GSM data in Hong Kong

Just got to Hong Kong and bought a prepaid sim for my sprint m8. Data and voice is working, but data only seems to be GSM, and not 3g or 4g. Any advice? Thanks.

Find out what carrier you are using with that prepaid sim.
Then see what frequency bands and protocols are used,
then match that up with your phone.
If i had to guess i would say your missing the right frequency bands or you have the right band but not matching up with the right protocol.
i would use GSMarena.com http://www.gsmarena.com/htc_one_(m8)_cdma-6233.php to get the phones band info. Since you know its a Sprint M8 that will tell you what you need to know.
2G Network GSM 850 / 900 / 1800 / 1900 - Sprint, Verizon
CDMA 800 / 1900 - Sprint, Verizon
3G Network HSDPA 850 / 1900 / 2100 - for Sprint
HSDPA 850 / 900 / 1900 / 2100 - for Verizon
CDMA2000 1xEV-DO - for Sprint, Verizon
4G Network LTE 800 / 1900 / 2600 - Sprint
LTE 700 / 1700 / 1800 / 2100 / 2300 / 2600 - Verizon

[Q] Unlocking T-Mobile htc one m8

I'm looking to buy a HTC One M8 T-Mobile version, and unlocking it.
I read on gsmarena.com that the frequencies that work on that phone are these.
GSM 850 / 900 / 1800 / 1900
HSDPA 850 / 1700 / 1900 / 2100 - T-Mobile
LTE band 4(1700/2100), 17(700) - T-Mobile
Now the frequencies in my country are
HSDPA 850 / 900/ 2100
LTE band 4 1800
If I unlock the phone will it be open from my LTE frequency in my country, and the 900Mhz 3g in my country,
or are the phones made for T-Mobile only work with those frequencies no matter if you unlock it or not.
Thanks in advance for all answers!

SIM unlock doesn't change the band compatibility. It just allows you to use a SIM from another carrier besides T-Mobile.
You should be able to s-off the phone ($25 US by sunshine method), and flash the appropriate radio for your region.
But it might be a safer bet to just buy the M8 version that supports your bands out of the phone. Just in case you are (for whatever reason) not able to accomplish the mods I mentioned above.