Originally Posted by masakisan

yes, and no result...

the only thing I don't tried is bootloader, but is locked (very locked)

What happens when u select your band


Sent from my X10i using XDA

don't work

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when I choose wcdma only, I lost signal ( phone line and data ) just the X in the signal bar indicator, it's not a phone version problem, my phone is X10a, and x10a is compatible with the two local carrier.

when I choose GSM only, all work ok, but only edge data mode

Phone is X10i

---

Originally Posted by masakisan

Hi, My name is Masaki, I'm from Peru, I have a problem with my Xperia X10a, my phone was operator locked (I buy it from my friend, he uses this phone with movistar operator but I have a line with another operator called claro. today I checked the service menu, I found the follow info, maybe this can be useful to find an answer...

Working band: GSM850 - GSM900 - GSM1800 - GSM1900 - UMTS_BC1 - UMTS_BC4 - UMTS_BC8

Your phone is an X10i, based on your output report.

This was taken right from this WIKI PAGE
in general, the various UMTS bands are deployed as follows:
Band I (W-CDMA 2100) in Europe, India, Africa, Israel (Cellcom, Orange, Pelephone [4]) Asia, Australia (all carriers' metropolitan networks), New Zealand (ITU Region 1), Thailand (TOT (Thailand)), and Brazil (part of ITU Region 2)
Band IV (W-CDMA 1700 or Advanced Wireless Services) in the United States (T-Mobile USA) and Canada (WIND Mobile, Mobilicity, Vidéotron)
Band VIII (W-CDMA 900) in Europe, Asia, Australia (Optus and Vodafone regional/country 3G networks), New Zealand (Vodafone NZ), Thailand (Advanced Info Service), Dominican Republic (Orange Dominicana), Venezuela (Digitel GSM), Poland (Aero2 HSPA+ Internet only[6])

this is from the X10 WIKI PAGE
Networks
The Xperia X10 uses the 850/900/1800/1900 frequency bands for GSM.[14] As for UMTS frequency bands, there are two variants; the X10a uses 800/850/1900/2100 bands, and the X10i uses 900/1700/2100. The X10a is used by AT&T Mobility in the USA, Telstra in Australia, and Rogers Wireless in Canada. It is also used in South America. The X10i is used by T-Mobile in the USA; Wind Mobile and Mobilicity in Canada; Optus and VHA (under both the Vodafone and 3 brands) in Australia; Singtel, Starhub and M1 in Singapore; and through the rest of Asia, Europe, and Oceania. In Japan, it is called the SO-01B and sold by NTT Docomo, using the X10a configuration.

This info was found HERE IN WIKI
Claro operates under this brand from October 11 of 2005, after the acquisition by America Movil of the companyTIM Peru besides America Movil had won a bid to enter Peru months ago. The company claims to be more coverage of the country as OSIPTEL and second in number of users after Movistar. This country has more than 9 million users.
Claro Peru offers network services GSM in the frequency of 1900 MHz, the same as with GPRS and EDGE in almost all the territory, also has a network UMTS in the frequency 850Mhz.
In April 2008 was the first company to launch a service 3G on a platform GSM, using the technology UMTS and updated HSDPA in the 850 MHz band to a speed up to 1.5 Mbit/s
On October 1, 2010 merged with Telmex Peru. The commercial director of America Movil, Rodrigo Arosemena, confirmed the start of the process.
On November 16, 2011 Claro announced that is to be the first operator in Peru have technology 4G, based on a network HSPA + reaching the speed of 5 Mbit/s download.

This came from HERE
Movistar is a major Spanish mobile phone operator owned by Telefónica Móviles. It operates in Spain and in many Latin American countries. It is the largest carrier in Spain with 22 million customers (cellphone services only) and 41.58% of market share.2 Its principal competitor in Latin America is America Movil. It offers GSM 900/1800 MHz (2G), UMTS 850 & 1900 MHz (3G) and HSDPA (3.5G) services.

Originally Posted by ToledoJab

Your phone is an X10i, based on your output report.

This was taken right from this WIKI PAGE
in general, the various UMTS bands are deployed as follows:
Band I (W-CDMA 2100) in Europe, India, Africa, Israel (Cellcom, Orange, Pelephone [4]) Asia, Australia (all carriers' metropolitan networks), New Zealand (ITU Region 1), Thailand (TOT (Thailand)), and Brazil (part of ITU Region 2)
Band IV (W-CDMA 1700 or Advanced Wireless Services) in the United States (T-Mobile USA) and Canada (WIND Mobile, Mobilicity, Vidéotron)
Band VIII (W-CDMA 900) in Europe, Asia, Australia (Optus and Vodafone regional/country 3G networks), New Zealand (Vodafone NZ), Thailand (Advanced Info Service), Dominican Republic (Orange Dominicana), Venezuela (Digitel GSM), Poland (Aero2 HSPA+ Internet only[6])

this is from the X10 WIKI PAGE
Networks
The Xperia X10 uses the 850/900/1800/1900 frequency bands for GSM.[14] As for UMTS frequency bands, there are two variants; the X10a uses 800/850/1900/2100 bands, and the X10i uses 900/1700/2100. The X10a is used by AT&T Mobility in the USA, Telstra in Australia, and Rogers Wireless in Canada. It is also used in South America. The X10i is used by T-Mobile in the USA; Wind Mobile and Mobilicity in Canada; Optus and VHA (under both the Vodafone and 3 brands) in Australia; Singtel, Starhub and M1 in Singapore; and through the rest of Asia, Europe, and Oceania. In Japan, it is called the SO-01B and sold by NTT Docomo, using the X10a configuration.

This info was found HERE IN WIKI
Claro operates under this brand from October 11 of 2005, after the acquisition by America Movil of the companyTIM Peru besides America Movil had won a bid to enter Peru months ago. The company claims to be more coverage of the country as OSIPTEL and second in number of users after Movistar. This country has more than 9 million users.
Claro Peru offers network services GSM in the frequency of 1900 MHz, the same as with GPRS and EDGE in almost all the territory, also has a network UMTS in the frequency 850Mhz.
In April 2008 was the first company to launch a service 3G on a platform GSM, using the technology UMTS and updated HSDPA in the 850 MHz band to a speed up to 1.5 Mbit/s
On October 1, 2010 merged with Telmex Peru. The commercial director of America Movil, Rodrigo Arosemena, confirmed the start of the process.
On November 16, 2011 Claro announced that is to be the first operator in Peru have technology 4G, based on a network HSPA + reaching the speed of 5 Mbit/s download.

This came from HERE
Movistar is a major Spanish mobile phone operator owned by Telefónica Móviles. It operates in Spain and in many Latin American countries. It is the largest carrier in Spain with 22 million customers (cellphone services only) and 41.58% of market share.2 Its principal competitor in Latin America is America Movil. It offers GSM 900/1800 MHz (2G), UMTS 850 & 1900 MHz (3G) and HSDPA (3.5G) services.

The phone is bought locked to an operator in his country and was working fine before the said unlock procedure which made the phone set itself as the international version not the original version it was originally set up as

Btw you can access other bands not supported officially via service mode

@op what happens when you try toledojabs' suggestion

Sent from my X10i using XDA

when I enter service menu *#*#4636#*#*
choose phene information
Menu/select band
options:
euro / usa / japan / aus / aus 2

the only working band is USA the others, I lost the GSM signal

Masaki

Originally Posted by I_@m_me

The phone is bought locked to an operator in his country and was working fine before the said unlock procedure which made the phone set itself as the international version not the original version it was originally set up as

Btw you can access other bands not supported officially via service mode

@op what happens when you try toledojabs' suggestion

Sent from my X10i using XDA

My understanding is the radio channels are pre-set with hardware (x10 a/i) components. Yes we can switch between channels for each model but turning x10i into x10a fully requires hardware changes. The *#*#4636#*#* allows you to change the channel in the set predetermined by the model x10a or x10i. The only way to make x10i into x10a is physical on board chip swap ( I don't think this can be done)

As for the phone was using 3g before, after alot of research there are carriers in Peru that support x10i channels, the phone was either on different carrier or was roaming on 3g.
Sorry the channels are what they are, you have an x10i and there is no way to change channel set from i to a they are different chips

What does sticker under battery say?
From my XPERIA X10S v8.2 on kCernel @ 1.19ghz

the sticker says: sony ericsson X10a

the phone was working ok (with movistar) before the unlock, after the unlock (using medusabox) the 3g don't work anymore, the other thing I found is, before the unlock the bootloader was open, but aftre the unlock process, the bootloader is locked.

now when I use the phone in GSM mode only, the phone signal is ok and edge icon appear, but when I set to WCDMA only I completely lost the signal (no data, no phone, just the red X in the bars signal) (movistar and claro chip, the same result...)


the guy who unlocked the phone don't know why this happen, he use a device called medusa box, this device is conected to the phone throuhg some pins under the battery

Originally Posted by ToledoJab

My understanding is the radio channels are pre-set with hardware (x10 a/i) components. Yes we can switch between channels for each model but turning x10i into x10a fully requires hardware changes. The *#*#4636#*#* allows you to change the channel in the set predetermined by the model x10a or x10i. The only way to make x10i into x10a is physical on board chip swap ( I don't think this can be done)

As for the phone was using 3g before, after alot of research there are carriers in Peru that support x10i channels, the phone was either on different carrier or was roaming on 3g.
Sorry the channels are what they are, you have an x10i and there is no way to change channel set from i to a they are different chips

What does sticker under battery say?
From my XPERIA X10S v8.2 on kCernel @ 1.19ghz

I think that is part of low level software . And radio is part of soc which is same with every Xperia x10. And from what I understand the band region change is as long as you set it there whether a factory reset or a reflash would wipe such changes is not throughly proven
@Toledojab but you still see an available network if you using 3g right

Sent from my X10i using XDA

Originally Posted by masakisan

the sticker says: sony ericsson X10a

the phone was working ok (with movistar) before the unlock, after the unlock (using medusabox) the 3g don't work anymore, the other thing I found is, before the unlock the bootloader was open, but aftre the unlock process, the bootloader is locked.

now when I use the phone in GSM mode only, the phone signal is ok and edge icon appear, but when I set to WCDMA only I completely lost the signal (no data, no phone, just the red X in the bars signal) (movistar and claro chip, the same result...)


the guy who unlocked the phone don't know why this happen, he use a device called medusa box, this device is conected to the phone throuhg some pins under the battery

What software hardware combo did he use?

Sent from my X10i using XDA

Originally Posted by I_@m_me

I think that is part of low level software . And radio is part of soc which is same with every Xperia x10. And from what I understand the band region change is as long as you set it there whether a factory reset or a reflash would wipe such changes is not throughly proven
@Toledojab but you still see an available network if you using 3g right

Sent from my X10i using XDA

Sorry wrong impression, my x10a works. I am just trying to find out how medusa changes x10a into x10i


From my XPERIA X10S v8.2 on kCernel @ 1.19ghz