I've been struggling with configuring my Unlocked ATT streat to work on my local provider. It uses 850 MHz band. How can I manually check/configure the band?
I can't get a reliable connection at all.
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I am going on vacation in April and want (need!) data to use my Vibrant for Nav etc while driving around Ireland, I got this as a response from 3.
3 network work on the following frequencies
• GSM 850
• GSM 900
• GSM 1800
• GSM 1900
• UMTS 2100
• GPRS
• HSDPA
Does anyone know if the Vibrant will work on the 3 network? I know TMO US uses UMTS 1700 and 2100 but I have heard that TMO requires both 1700 and 2100 for 3G while other networks only require one.
Yes it will. Get an unlock code from Tmobile.
Does anyone know how to configure the way the phone lock to the different frequency towers? I.e. can we create a rule on how it works out which band it uses first.
i.e. In my area, i can get 2G, 3G and 850 WCDMA 3G. I want to configure my mobile to use the priority in order of
1. 2G
2. 850 WCDMA 3G
3. 3G
Anyone knows how to do this? Thx.
You can't control this as the towers tell the phone priorties. If everyone could choose whatever is "best" - say 2G - then the 2G channel would be jammed and then the 3G channel would be sitting idle.
The base station and the phone communicate and then mutually switch frequencies or channels.
You can manually lock the phone to 2G of-course then manually switch to 3G if/when you need speeds or something.
There are very valid reasons to be able to control how the signal is acquired. Some areas where 2G and 3G signals overlap, you may find that the 3G signal is weaker or problematic and you want the phone to hold on to 2G. It could be a particular band, i.e. 850MHz or 1800MHz.
Sometimes a particular 3G band is faulty so we need to exclude it.
Didn't say you didn't have valid reasons, hell i lock my phone to 850mhz when i'm using the stock ROM but on CyanogenMod can't do it. One reason why I did it is because 850mhz is stronger (obviously) but for some reason AT&T is camping everyone in the area on 1900. I'm guessing they are doing some LTE work on the 850mhz frequency so they push everyone off it to do the work needed but when I manually force it back to 850 calls work just as normal
Anyways, you can manually choose em using the network codes as I said, you just can't set up preferences as you so desire as that's controlled by the network, even if it's for reasons as mentioned. You can just disable 1900mhz and therefore only get 3G on 850 but if you go in an area where there's no 850 license then you wont have cell coverage.
Will this phone work properly on Fido's 3G network? Does someone have this phone running on Fido's 3G network? I've heard you need to change the phone's APN settings. Can someone give me some clarification?
S2:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
Fido:
The Fido network runs on GSM 1900 and offers coverage in major urban areas in Canada. It has been so since its inception. After Microcell was purchased by Rogers, the Fido network was available to Rogers customers. The Rogers GSM network operates at 850 MHz, and while a fee was previously required for Fido customers to access the Rogers network, this is no longer the case. The end result is that both Fido and Rogers customers can now access and use either network or both with a single account, device and SIM card. Regardless of which network is accessed, Fido customers will see "Fido" as the network name, and Rogers customers will see "Rogers" as the network name.
Similarly, HSPA+ service is available in 850 MHz and 1900 MHz frequencies. The maximum theoretical download speed is of 21 Mbit/s. Fido customers should also be able to access Rogers' LTE network shortly after it becomes available as of 2011 in Ottawa, Montreal, Toronto and Vancouver.
sharp2G said:
Will this phone work properly on Fido's 3G network? Does someone have this phone running on Fido's 3G network? I've heard you need to change the phone's APN settings. Can someone give me some clarification?
S2:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
Fido:
The Fido network runs on GSM 1900 and offers coverage in major urban areas in Canada. It has been so since its inception. After Microcell was purchased by Rogers, the Fido network was available to Rogers customers. The Rogers GSM network operates at 850 MHz, and while a fee was previously required for Fido customers to access the Rogers network, this is no longer the case. The end result is that both Fido and Rogers customers can now access and use either network or both with a single account, device and SIM card. Regardless of which network is accessed, Fido customers will see "Fido" as the network name, and Rogers customers will see "Rogers" as the network name.
Similarly, HSPA+ service is available in 850 MHz and 1900 MHz frequencies. The maximum theoretical download speed is of 21 Mbit/s. Fido customers should also be able to access Rogers' LTE network shortly after it becomes available as of 2011 in Ottawa, Montreal, Toronto and Vancouver.
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Hello everyone,
"The LTE standard can be used with many different frequency bands. In North America, 700 and 1700 MHz are planned to be used; 800, 1800, 2600 MHz in Europe; 1800 and 2600 MHz in Asia; and 1800 MHz in Australia. As a result, phones from one country may not work in other countries. Users will need a multi-band capable phone for roaming internationally." (en.wikipedia.org)
So far, I have not heard of any LTE cell phone able to adapt to this multi-frequency international situation.
Even within the USA, it does not seem possible for an unlocked LTE cell phone which has been bought through one carrier to be used with another one.
Well, it should be possible !
After all, LTE is an international standard supporting all frequency bands, flexible bandwidth and both FDD and TDD duplexes ...
So it might not be that difficult to make these phones be able to use different LTE frequencies.
All radio systems can easily scan the whole spectrum in order to settle on the next available or desired channel. Another example, on Android Gingerbread phones :
"Settings-->Wireless & Networks-->Mobile Networks-->Network Operators--> Search Network" shows you all the mobile carriers available in your area, offering you the possibility to manually register on a specific network.
All this means that it should be technically possible to buy an unlocked LTE cell phone in the US for example, buy a sim card in another country where the LTE frequency is different, and everything should work fine, maybe with some software tweak.
Has anybody tried this already ?
I have looked for days now across multiple forums to get some insight on this issue:
I want to use my Thunderbolt in Thailand. Haven't found any threads that speak of success, only conjecture that it won't work.
Homework I've done (unless i understand it incorrectly):
- Verizon 3G operates on the 850 / 1900 mhz cdma band. Radio Frequency Summary
" The following is a list of known frequencies which Verizon employs in the United States:
Frequencies used on the Verizon Network
Frequency Protocol Class
850 MHz 1xRTT/EV-DO/eHRPD 3G
1900 MHz 1xRTT/EV-DO/eHRPD 3G
700 MHz LTE 4G
1700/2100 MHz(AWS) LTE 4G"
- Truemove, a popular mobile company in Thailand has early links to Verizon and their 3G service operates on the 850mhz wcdma band
"What should I do if I want to use TrueMove 3G service but I don’t have a 3G 850 MHz mobile phone?
Basically, it’s not that all mobile phones work on any band. Each 3G compatible mobile phone supports different bands. For example, if you have a 3G 2.1 GHz or 900 MHz or 2G mobile phone, you will not be able to use TrueMove 3G service because TrueMove offers 3G service on 850 MHz band.
If you want to enjoy TrueMove 3G service, it is recommended that you buy a 3G WCDMA 850 MHz mobile phone or visit any True Shops and ask for a 3G compatible mobile phone. True Shops also sell different smartphones that support different mobile platforms e.g. iPhone 3G/3GS, BlackBerry Bold 900/Bold 9700 and Motorola Milestone."
- I spoke with verizon after reading other forums about 'unlocking' thunderbolts and was told that the thunderbolt comes unlocked, so unlocking wouldn't be necessary anyway.
- Lastly, it seems that many people have successfully put a 3G SIM into a 4G SIM slot on there phone and received 3G service.
....So what am I missing? What would prevent me from being able to use my Thunderbolt in Thailand for simple 3G service if the carrier (Truemove) works on cdma based bands? What extra might I have to do to get it to work?
PS: Sorry I can't insert the links directly in the post. Not allowed since this is my first post.
Thanks for any help