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
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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.
Click to expand...
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?

[HELP] Getting 3G

I just bought a Xperia Arc S (LT18a) Unlocked on Amazon.com, and I was wondering if there's anyway to get 3G on my phone, according to GSMArena this are my phone capabilities:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 2100 - LT18i
HSDPA 850 / 1900 / 2100 / 800 - LT18a
Orange Dominicana is 900/1900Mhz on 3G
EDGE on Orange is so slow.. What if I flashboot my LT18a to LT18i? Will it work?
Thanks

on your carrier, you need to fill the correct APN for the simcard.

Patambiz said:
on your carrier, you need to fill the correct APN for the simcard.
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Click to collapse
I didn't have to fill it, the carrier send me the config. My apn is good :s

Albert62 said:
I just bought a Xperia Arc S (LT18a) Unlocked on Amazon.com, and I was wondering if there's anyway to get 3G on my phone, according to GSMArena this are my phone capabilities:
2G NetworkGSM 850 / 900 / 1800 / 1900
3G NetworkHSDPA 900 / 2100 - LT18i
HSDPA850 / 1900 / 2100 / 800 - LT18a
Orange Dominicana is 900/1900Mhz on 3G
EDGE on Orange is so slow.. What if I flashboot my LT18a to LT18i? Will it work?
Thanks
Click to expand...
Click to collapse
Cross flashing between American and International models may cause some problems.. It is better if you don't do any such thing..
Sent from my Xperia Pro using Tapatalk 2

Hardware is different, you can't change it.
Sent from my Xperia Arc S using xda premium

Maybe trade it for a LT18i ?

I found the problem, its my data plan I have to change it

LG Optimus F180s or K or L???

Greeting all,
I live currently in USA and want to buy LG optimus F180. and work in USA and international (middle east) without any problem and getting 3G or HSDPA .
I want to use GSM unlock
2G Network : GSM 850 / 900 / 1800 / 1900
3G Network : HSDPA 850 / 900 / 1900 / 2100
so people please which model to buy and from where (good price)
Thanks and appreciation

N7105 Not working 3G on Argentina

Hello i bought my N7105 on China. It works perfectly but my problem is that in Argentina i have only EDGE signal for Internet Not 3g.
I wish to know because i read a lot.. Because i think my celphone was europe version or korean version, never will know.
I think that the problem is that my UMTS is working on different bands ( 850 and 2100) and in Argentina we use ( 850-1900) so i Would like to know if it`s possible to install a N7100 south american modem to fix it, or what..
N7100 Firmware and Modems.
Just Modems N7100
Search for N7105 Modems (Haven`t Found Yet)
Or i can`t use 3G in Argentina.
Thanks anow Hope u can Help Me

I can Add in What bandwidth work our companies here.
Band V (W-CDMA 850)
Band II (W-CDMA 1900)
I think my company is working on 1900. Personal Argentina.
When i go to WCDMA only find Movistar. That they say works on the Band V. So i think my phone is only working on Band 850 and maybe 2100 also because i bought on Hong Kong.
Anyone can check with IMEI or something?
Is there any way to change the Band to Band II?
Thanks a lot
I need an answer please !! :good:

According to gsm arena, the n7105 is not compatible with 3G the 1900mhz band.
3G Network - HSDPA 850 / 900 / 2100 - N7105
4G NetworkLTE - 800 / 900 / 1800 / 2600 - N7105
I know that it's not an easy suggestion but have you considered changing providers?
Cheers
Sent from my GT-N7100

vladeco said:
According to gsm arena, the n7105 is not compatible with 3G the 1900mhz band.
3G Network - HSDPA 850 / 900 / 2100 - N7105
4G NetworkLTE - 800 / 900 / 1800 / 2600 - N7105
I know that it's not an easy suggestion but have you considered changing providers?
Cheers
Sent from my GT-N7100
Click to expand...
Click to collapse
N7105 can only support 850/2100mhz band,so if there is 1900mhz 3g band in your area, it will be a problem

Does SGH-T989 supports 4G?

i m wondering that does out beloved phone(SGH-t989) supports 4G.
i know i should search web before posting here but trust me i surfed alot for the clarification.
i'm posting question because when i was using stock rom the logo says(displays) 4G symbol and now this day when i put my 4G sim in slot i do not get network. on top it, my friend said, in cyanogenmod 4g is not supported so i want to know that is really our phone supports 4G or that cyanogenmod don't let me go into 4G world ?

http://www.gsmarena.com/samsung_galaxy_s_ii_t989-4129.php
Technology
GSM / HSPA
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 1700 / 1900 / 2100
Speed HSPA 42.2/5.76 Mbps
GPRS Class 12
EDGE Class 12
nope. HSPA+ is technically a form of "4G", but not the most current LTE (which, i assume, youre referring to)

youdoofus said:
http://www.gsmarena.com/samsung_galaxy_s_ii_t989-4129.php
Technology
GSM / HSPA
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 1700 / 1900 / 2100
Speed HSPA 42.2/5.76 Mbps
GPRS Class 12
EDGE Class 12
nope. HSPA+ is technically a form of "4G", but not the most current LTE (which, i assume, youre referring to)
Click to expand...
Click to collapse
Thanks for your reply.
yes, hercules supports only HSPA+ but not the LTE.