Mobileuncle shows that my device is only on WCDMA 2000 with other frequencies grayed out...particularly WCDMA 850 which the one I want to access to get HSPA, right now only getting 2G.
It might be just a APN problem even though I've changed the APN several times with no results, so I'm wondering about changing the Frequency of the WCDMA, or accessing all frequencies?
http://www.starleadintl.com/pro_detail.php?ProId=441
According to these specs, and I believe this is the manufacturer and developer, the wcdma frequency can be changed...for $3 bucks no less. That would indicate a firmware change.
Have you find out how to change the frequency?
I need to change on my Xiaomi Note
Please share.
Thank you
Related
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.
I seem to have a slightly odd problem, in areas where O2 is now providing 900 MHz 3G in addition to the older 2100 MHz my 3G data pretty much stops working unless I change settings in the service menu to only use 900 MHz 3G in which case it works fine. The problem then is anywhere that 900 MHz 3G is unavailable I obviously lose 3G service unless I re-enable 2100 MHz in the service menu.
If only 2100 MHz 3G is available and I set it back to default then data works without any problems, but returning to an area offering both causes data to stop working within minutes. It would appear that it always uses the 2100 MHz band when both are available if that makes any difference.
I have tried several different modems to no avail, and returning the phone to latest stock firmware for the UK. Doing the latter seemed to help, until I rooted the phone using Doomlords script at which point it stared playing up again. That might just be coincidental, I really don't know.
From searching around various places I couldn't find anyone experiencing similar issues, unless my search skills are failing badly. I guess it leaves me with two questions, firstly any ideas on why this is occurring?
And secondly is it possible to set an order of preference for 3G bands anywhere, as I couldn't find anything in the service menus to do that. Based on how the phone is behaving I'd imagine if it used the 900 MHz band as a preference where available the problem might go away.
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 just received a new Android phone from China that was advertised as having support for GSM 850/900/1800/1900 & WCDMA 850/2100 with GPRS/EDGE/HSDPA data capabilities. However I'm only connecting to AT&T on 2G GPRS data at around max 50 kbps. Occasionally I will see an EDGE "E" for a few seconds only to have it disappear. I have tried the phone in several locations where I know there is both good EDGE coverage as well as 850 MHz 3G/HSPA towers but the phone isn't seeing anything. I've tried every setting change as well as a new SIM to no avail.
Does anyone know if there is an app or potentially a dial command, terminal command line utility or external program that can query an android phone to see which GSM/WCDMA bands are supported in the chipset/baseband?
Thanks, Kav
Kavik said:
I just received a new Android phone from China that was advertised as having support for GSM 850/900/1800/1900 & WCDMA 850/2100 with GPRS/EDGE/HSDPA data capabilities. However I'm only connecting to AT&T on 2G GPRS data at around max 50 kbps. Occasionally I will see an EDGE "E" for a few seconds only to have it disappear. I have tried the phone in several locations where I know there is both good EDGE coverage as well as 850 MHz 3G/HSPA towers but the phone isn't seeing anything. I've tried every setting change as well as a new SIM to no avail.
Does anyone know if there is an app or potentially a dial command, terminal command line utility or external program that can query an android phone to see which GSM/WCDMA bands are supported in the chipset/baseband?
Thanks, Kav
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either misadvertised or you misunderstood the ad. If you do some research on those china knock off phones you'd know that they basically don't support any 3G or higher spectrum except the weird ass **** they use in china. I was tempted to buy one of those phones until I discovered that. If you don't like it I suggest returning it asap.
Hello,
I am trying to find out the way in which I can able to activate the "Service Menu" or Engineering Mode" for LYF Wind 4, Handset from Reliance Jio, supporting LTE. I need this to change the LTE band to Band 40, which might result in better DL/UL speed for Jio, as the speed presently is really poor, under the "Welcome Plan".
Any Suggestions?
Its bad for everybody mate. Just try doing an reset APN. Thats seems to improve the speed. But its consistently fast only at night. Band 40 is also TDD band so effective bandwidth goes down with number of users. Only FDD bands can give us consistent speed because each user doesnt share the band with another but get his own dedicated one instead.