Hello, My device lenovo vibe P1 is losing data connection each time it switches from one 4G Band To Another. If my device is now connected to Band 40 then suddenly it switches to Band 3 and my internet gets disconnected and connected. Same happens with Band 3 To Band 40 Switching. Is this a software error or Hardware problem?
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I really don't know why...
But I had with my phone an problem related with PA, which I was missing signal lots of times..
Than I've put a new Power Amplifier on the phone.. I have signal back, BUT.
But my carrier mostly uses 850Mhz for their 3g network and my 3g coverage now is almost none.
I compared the LAC/CID numbers on different phones on the same carrier and same place. They are the same on other phones and different on mine.
After testing with all carriers sim card, I managed to discover that operators that only use 2100mhz for 3g work perfect on my phone.
Explaining why I have almost none coverage of 3G on my 850Mhz/2100Mhz carrier.
What could I do?
What should be the problem?
This phone has 3 months age...
One fast update:
Automatic = All band
EURO Band = WCDMA 2100 only
USA Band = WCDMA 1900 & 850 only
JAPAN Band = WCDMA 2100 only
AUS Band = WCDMA 2100 & 850 only
AUS2 Band = WCDMA 850 only
If I put AUS2 or USA I get no signal at all on 3G...
Only with the other options on the Select radio band on the *#*#4636#*#* thing.
Helllpp!
anyone?
help?
I really need it...
Have you tried on complete stock?
Sent from my Amazon Kindle Fire using xda premium
I am running completely stock.
android 4.2 odexed with LH1 radio.
Today I standed up above an mini antenna from my carrier. An place where other phones catches up full bars and 31 asu and "-57dbm" i think.
So, the signal was changing a LOT, the phone was crazy between 3g/h/h+.
Then I put AUS2 in radio frequencies and the signal stabilized a littel bit. But I whas having just 1 bar of signal(4asu)....
THEN, when I tested on SpeedTest.net app, my phone increased insanely to 31su FULL BARS!!
The phone apparently started to be normal..
BUT for my surprise everything come back to the crazy signal and low signal thing I was having before the Speedtest.net test.
WHAT IS GOING ON???
Hi All,
I got LG G3 D855 international version from eBay last week, I'm wondering if I can get LTE, or H+ network on the phone. On "Network Mode I can see "GSM/WCDMA/LTE auto" listed , when I choose it the signal bars on the notification area start looping, after that it switch back to "GSM/WCDMA" option !
I added a new APN for LTE , but still not working on LTE.
According to T-Mobile coverage map , my area is support 4G /LTE network . The phone is rooted , software version: V10b-GLOBAL-COM (For Hong Kong)
I can get 10-12MB download speed on H, I guessing it will be a way faster on H+ , or LTE.
Any idea about how to get LTE to work?
Thank you,
I'm surprised HSPA is even working, you must be in an area where they moved it to 1900 (Band 2). The D855 model doesn't support the AWS band, also known as Band 4 or the 1700 frequency (so says GSM Arena anyway) . This band is where T-Mobile has their primary network deployments these days. That means no HSPA+ (that's only on Band 4, not Band 2), and no LTE at all.
Bottom line is I don't think you want to be using the Euro D855 model on T-Mobile USA network. Not the right tool for the job.
Sent from my LG-V500 using Tapatalk
I think it should still work. Frequencies tmo supports (straight from website):
4G LTE : Band 2 (1900 MHz), Band 4 (1700/2100 MHz), Band 12 (700 MHz)
4G HSPA+: Band 2 (1900 MHz), Band 4 (1700/2100 MHz)
3G HSPA: Band 4 (1700/2100 MHz)
The phone supports 2100MHz and 700MHz, and not 1900 or 1700. I just did a speed test and get 4Mbps reporting it used HSPA+. If that works, I'm not sure why LTE wouldn't unless it *has* to have the 1700 to get LTE.
Edit: here's some info on the 700MHz band http://www.spectrumgateway.com/t-mobile-700a-spectrum. I'll try it when I'm on vacation. I live in NC unfortunately.
Hi, I use LG G3 D855 and looking for solution to get LTE on T-Mobile USA. After some research inside the forum, I decided to try to use CyanogenMod (CM 12.1) on my system.
It works well and now I can enjoy LTE on T-Mobile network, even though not pretty stable yet, but I am good with that since the OS still ongoing development.
You can try to download the OS on Cyanogen official website, and use the latest update available.
In order to confirm if you get LTE signal, beside check on your LTE sign, you can use LTE Discovery apps whenever you lost LTE connection and try to reconnect on an LTE signal.
Oh, forgot to mention, I am located in College Station, TX.
Beware: LTE Band 4 (1700/2100 combo) it's not the same LTE Band 1 (2100 only) that LG G3 D855 supports. Better talk using band numbers not frequencies.
I just bought a LG G3 F400K South Korean variant from an online store. The device supports wcdma 850 mhz, 2100 mhz and 1900 mhz. Whenever I use mobile data, the lg g3 signal indicates 3G but when I try to surf using chrome, the page loads sluggishly and usually ends in unable to load page error, signal bars are also fluctuating when on wcdma only mode. Also, using the app store on mobile data yields "connection timed out". What's strange is when I use the same globe sim on my LG L Fino, I get an H, browsing is smooth and the appstore works fine. Any input would greatly be appreciated.
Im from the Philippines using the network Globe Telecom
Globe Telecom GSM Frequency Band - 900 MHz/1800 MHz (Dual Band)
3G Frequency Band W-CDMA (UMTS) - 850Mhz/2100 MHz
UMTS/3G 1900(uplink)/2100(downlink) (Dual Band)
4G (live LTE, WiMAX, HSPA+, test, license) - 4G Globe HSPA+ WiMAX 1800Mhz(Launch Date: September 2012)
I'm not subscribed to LTE meaning I'm supposed to get "H" or "H+" for data but i'm only getting 3G.
Is my device incompatible with the network?
Does 3G already mean "H" or "H+" in my G3?
Why are the signal bars unstable while the same sim works fine on my LG L Fino?
chenzhen55 said:
I just bought a LG G3 F400K South Korean variant from an online store. The device supports wcdma 850 mhz, 2100 mhz and 1900 mhz. Whenever I use mobile data, the lg g3 signal indicates 3G but when I try to surf using chrome, the page loads sluggishly and usually ends in unable to load page error, signal bars are also fluctuating when on wcdma only mode. Also, using the app store on mobile data yields "connection timed out". What's strange is when I use the same globe sim on my LG L Fino, I get an H, browsing is smooth and the appstore works fine. Any input would greatly be appreciated.
Im from the Philippines using the network Globe Telecom
Globe Telecom GSM Frequency Band - 900 MHz/1800 MHz (Dual Band)
3G Frequency Band W-CDMA (UMTS) - 850Mhz/2100 MHz
UMTS/3G 1900(uplink)/2100(downlink) (Dual Band)
4G (live LTE, WiMAX, HSPA+, test, license) - 4G Globe HSPA+ WiMAX 1800Mhz(Launch Date: September 2012)
I'm not subscribed to LTE meaning I'm supposed to get "H" or "H+" for data but i'm only getting 3G.
Is my device incompatible with the network?
Does 3G already mean "H" or "H+" in my G3?
Why are the signal bars unstable while the same sim works fine on my LG L Fino?
Click to expand...
Click to collapse
3g means you are getting H+ .... H+ is just another name of 3g
chenzhen55 said:
I just bought a LG G3 F400K South Korean variant from an online store. The device supports wcdma 850 mhz, 2100 mhz and 1900 mhz. Whenever I use mobile data, the lg g3 signal indicates 3G but when I try to surf using chrome, the page loads sluggishly and usually ends in unable to load page error, signal bars are also fluctuating when on wcdma only mode. Also, using the app store on mobile data yields "connection timed out". What's strange is when I use the same globe sim on my LG L Fino, I get an H, browsing is smooth and the appstore works fine. Any input would greatly be appreciated.
Im from the Philippines using the network Globe Telecom
Globe Telecom GSM Frequency Band - 900 MHz/1800 MHz (Dual Band)
3G Frequency Band W-CDMA (UMTS) - 850Mhz/2100 MHz
UMTS/3G 1900(uplink)/2100(downlink) (Dual Band)
4G (live LTE, WiMAX, HSPA+, test, license) - 4G Globe HSPA+ WiMAX 1800Mhz(Launch Date: September 2012)
I'm not subscribed to LTE meaning I'm supposed to get "H" or "H+" for data but i'm only getting 3G.
Is my device incompatible with the network?
Does 3G already mean "H" or "H+" in my G3?
Why are the signal bars unstable while the same sim works fine on my LG L Fino?
Click to expand...
Click to collapse
Hi,
Do you still have the same problem till now? I bet we got the same issue and hopefully someone from here has found a workaround for this.
By the way, are you still on Kitkat? Or Lollipop? Have you already tried to use SMART Sim Card?
Thanks a lot for your time. I'm still trying to figure this one out.
I'm in the UK this band is supposed to work on this phone I've tried forcing it nothing seems to work.
My sim is 4gg (giffgaff) APN is set and I'm in an excellent signal area for 4g.
???
Work in my other phone's.
you're right, band 20 is supposed to work but unfortunately I'm on 3UK so can't check for you(though I think 3 does use some 800mhz spectrum depending on area) - so 3G works for you only? Have you tried to force 4g using the mtk engineering app(android settings>phone info>set LTE only from drop down menu)
Hello all,
I have problem with my phone (e6883) always choosing band 2600mhz after a while on allowing it to access data when band 20 (800mhz) is a lot stronger in my place.
Does anyone know how to force it to stay on band 20?
I have tried the:
*#*#INFO#*#*
*#*#SERVICE#*#*
things.
Also I am using dual sim if it changes anything.