Database Users

[Q] no 4G in China

My Samsung Note 4 N910C had great performance under all 5 operators when I was in Hong Kong, with unbelievable 4G speeds...
Now I am in China, using a 4G enabled SIM card from China Unicom and the icon on the top bar only shows H+.
By contrast my iPhone 6 and my LG G3 show 4G, both of them. Under the same conditions, same network (China Unicom) and same 4G SIM card
I asked China Unicom: they run a 4G FD LTE network, in 1800MHz band. So what could be the culprit? Are we sure that Samsung SM-N910C covers the FD LTE 1800MHz band?
(LG G3 and iPhone 6 plus do for sure since I get the 4G icon on top bar)
Thank you and waiting.
Saulo

OTA routine updates + Phone call recording
I have other 2 questions
I wish to root my device: (using chaifire Auto-CF method).
1. OTA routine updates
What will happen when I make an official OTA monthly upgrade, from Samsung? Will I get the device bricked? Will I lose rooting?
2. Phone call recording.
For many reasons I wish to avoid to flash a custom rom. How then can I get the capability of "phone call recording" during a phone call? I have this feature with my NON rooted MIUI M3 device...running android 4.4.2. Are out there any apk to install or special mods?
I am not asking about privacy concerns or the legality of phone recording, I just wish to know if that function is feasible without flashing a custom ROM.
Thank you
Saulo

saulo866 said:
My Samsung Note 4 N910C had great performance under all 5 operators when I was in Hong Kong, with unbelievable 4G speeds...
Now I am in China, using a 4G enabled SIM card from China Unicom and the icon on the top bar only shows H+.
By contrast my iPhone 6 and my LG G3 show 4G, both of them. Under the same conditions, same network (China Unicom) and same 4G SIM card
I asked China Unicom: they run a 4G FD LTE network, in 1800MHz band. So what could be the culprit? Are we sure that Samsung SM-N910C covers the FD LTE 1800MHz band?
(LG G3 and iPhone 6 plus do for sure since I get the 4G icon on top bar)
Thank you and waiting.
Saulo
Click to expand...
Click to collapse
As far as I know china mobile runs FDD band 3 (1800) and band 7 (2600) ONLY in Hong Kong. All other parts of China using TDD. As far as 910C I can assure you it has band 3 (1800) because vodafon qatar uses that band.
Sent from my SM-N910C using Tapatalk

iznee said:
As far as I know china mobile runs FDD band 3 (1800) and band 7 (2600) ONLY in Hong Kong. All other parts of China using TDD. As far as 910C I can assure you it has band 3 (1800) because vodafon qatar uses that band.
Sent from my SM-N910C using Tapatalk
Click to expand...
Click to collapse
Thank you.
I am using China Unicom, not China Mobile, but, yes, both carriers are currently sharing the TDD LTE network
So we have to admit that LG G3 has both FDD LTE and TDD LTE? Otherwise why my LG G3 shows a 4GB icon on top bar? Of course I am using the same 4G enabled China Unicom SIM card

The 910G should work in china as it supports TDD bands
Sent from my SM-N910C using Tapatalk

saulo866 said:
Thank you.
I am using China Unicom, not China Mobile, but, yes, both carriers are currently sharing the TDD LTE network
So we have to admit that LG G3 has both FDD LTE and TDD LTE? Otherwise why my LG G3 shows a 4GB icon on top bar? Of course I am using the same 4G enabled China Unicom SIM card
Click to expand...
Click to collapse
Really strange as both your 910c and the Unicom 9106w both list B3 (1800) in their specs so it should work.
Any way to get into the settings and force LTE only? Do the APNs look OK?
Sent from my 1+1

Refer here for worldwide lte bands: https://www.google.com.sg/url?sa=t&...oQFjAA&usg=AFQjCNHweUb9bpKCXyW6n_-ox1GDSm3eLQ
Sent from my SM-N910C using Tapatalk

Dear Kinghu
How to force LTE? In settings I only see
WCDMA only
WCDMA/GSM
GSM only
2.
In Hong Kong I saw 4G icon. But at that time I did NOT check in settings, Anyway the speed was so good! I downloaded an entire movie is less than 6 mins. Incredibly fast. Here I am back to average speeds.

saulo866 said:
My Samsung Note 4 N910C had great performance under all 5 operators when I was in Hong Kong, with unbelievable 4G speeds...
Now I am in China, using a 4G enabled SIM card from China Unicom and the icon on the top bar only shows H+.
By contrast my iPhone 6 and my LG G3 show 4G, both of them. Under the same conditions, same network (China Unicom) and same 4G SIM card
I asked China Unicom: they run a 4G FD LTE network, in 1800MHz band. So what could be the culprit? Are we sure that Samsung SM-N910C covers the FD LTE 1800MHz band?
(LG G3 and iPhone 6 plus do for sure since I get the 4G icon on top bar)
Thank you and waiting.
Saulo
Click to expand...
Click to collapse
I just bought a 4G china unicom sim card and receive H+ as the symbol.
I called Unicom and asked them why and the guy told me that iphone symbols show 4G but android and some other devices may show H+ but it's still 4G speeds..
Is that even possible? My HTC One can use 4G but it's showing H+, I didn't think H+ could be shown if it actually uses FDD-LTE..

[Q] How to check 4G capability on Redmi Note 4G?

Hi
I have Xiaomi Note 4G (China Unicom version) but I am unable to use it on FDD1800 band on Zong 4G network in Pakistan. I have a 4G SIM that works perfectly with my LG G2 D802 and Huawei E5375 (CMCC).
On the box its written both LTE TDD and FDD and it does show 1800 band but when I force it to LTE-Only using Phone Testing menu (*#*#4636#*#*), it goes to no service.
Is there a way I can test the phones capability regarding LTE FDD1800?
Thank you in advance for your help.
Regards,
Shoaib

shoaib.hadi said:
Hi
I have Xiaomi Note 4G (China Unicom version) but I am unable to use it on FDD1800 band on Zong 4G network in Pakistan. I have a 4G SIM that works perfectly with my LG G2 D802 and Huawei E5375 (CMCC).
On the box its written both LTE TDD and FDD and it does show 1800 band but when I force it to LTE-Only using Phone Testing menu (*#*#4636#*#*), it goes to no service.
Is there a way I can test the phones capability regarding LTE FDD1800?
Thank you in advance for your help.
Regards,
Shoaib
Click to expand...
Click to collapse
I just got my redmi note 4g yesterday, And as ar as I can see, in the Upper left corner it writes "Carriername 4g". So that should indicate if it works.

Diferent version of redmi note 4g?
hello,
I'm thinking of buying the terminal , but I have a doubt
Viewing Page Xiaomi singapore , hongkong and taiwan offering a 4G LTE version band frequencies LTE 1, 2, 3, 4 and 7 , but I see in different Chinese pages to buy it appears redmi note 4G LTE but only with frequencies LTE 1800/2100 .
Anyone know if there are two LTE versions as might ensure you have the frequencies that advertise in singapore, hongkong etc.
Thank you .

there are 2 versions of the phone. One that is domestic China 4G and then there is the export version that supports FDD-LTE/WCDMA/GSM. I am running a 4G version in Hong Kong and its fast. Not a huge diff from my Sammy Note 3. For the price its like giving it away. Only thing now is how reliable it is. Sammy is super reliable.

digi051669 said:
there are 2 versions of the phone. One that is domestic China 4G and then there is the export version that supports FDD-LTE/WCDMA/GSM. I am running a 4G version in Hong Kong and its fast. Not a huge diff from my Sammy Note 3. For the price its like giving it away. Only thing now is how reliable it is. Sammy is super reliable.
Click to expand...
Click to collapse
Where can I purchase this Hong Kong version online? Please help me out

LG V20 VS995 in the UK?

I'm in the UK and about to buy a LG V20 VS995 from Hong Kong off of Ebay. Pretty sure I've checked the available frequencies here especially the 800 & 900MHz bands as these are the ones which travel the furthest and are able to penetrate buildings better than the higher frequencies. I've attached a table of the main UK networks and what bands they use. So can anyone let me know I've got this right before I purchase. Many thanks

Hi
I am in the UK also and currently using O2 with no problems. I have also used an EE SIM again with no problems. The only thing you need to be aware that the VS995 will not pick up the SIM APNs automatically, at least that is what I found, so you will need to find the APN for whichever network you use. There are off-line APN finders you can find via Google. Hope this is of some help.
Sent from my Nokia 7 plus using Tapatalk

Ferg8080 said:
I'm in the UK and about to buy a LG V20 VS995 from Hong Kong off of Ebay. Pretty sure I've checked the available frequencies here especially the 800 & 900MHz bands as these are the ones which travel the furthest and are able to penetrate buildings better than the higher frequencies. I've attached a table of the main UK networks and what bands they use. So can anyone let me know I've got this right before I purchase. Many thanks
Click to expand...
Click to collapse
Hi, the LG V20 VS995 doesn't support ALL the bands used in the UK. It doesn't support one of the LTE bands used by Vodafone - the 2100Mhz band. So if you're on the Vodafone network, you may find that 4G/LTE speeds might be slightly slower.
I got all of this information from frequencycheck.com and it's usually where I get all my information on the bands that smartphones support.
The best option if you want to get a V20 that supports ALL bands in the UK (at this current time), is the LG V20 H990DS (Taiwanese Version).
That is the variant that I own and it supports every single band used in the UK.
The only other variant that supports all bands is the LG V20 H990N (Hong Kong version), but it only has Cat6 capability as opposed to the H990DS's Cat12 capability. Therefore, the maximum speed you'll be able to get is 300Mbp/s on the H990N - whereas on the H990DS you can get up to 600Mbp/s.
I got this information from techwalls.com/lg-v20-model-numbers-differences/
I hope that helped.

rikstar555 said:
Hi, the LG V20 VS995 doesn't support ALL the bands used in the UK. It doesn't support one of the LTE bands used by Vodafone - the 2100Mhz band. So if you're on the Vodafone network, you may find that 4G/LTE speeds might be slightly slower.
I got all of this information from frequencycheck.com and it's usually where I get all my information on the bands that smartphones support.
The best option if you want to get a V20 that supports ALL bands in the UK (at this current time), is the LG V20 H990DS (Taiwanese Version).
That is the variant that I own and it supports every single band used in the UK.
The only other variant that supports all bands is the LG V20 H990N (Hong Kong version), but it only has Cat6 capability as opposed to the H990DS's Cat12 capability. Therefore, the maximum speed you'll be able to get is 300Mbp/s on the H990N - whereas on the H990DS you can get up to 600Mbp/s.
I got this information from techwalls.com/lg-v20-model-numbers-differences/
I hope that helped.
Click to expand...
Click to collapse
I'm not really sure that's true according to gsmarena it does support band 4(1700/2100) admittedly that's not the same as 1(2100). I'm sorry but in my ignorance I don't know . Maybe someone who is more enlightened could tell us what the difference is. See here.
Also the bit about the Cat 6, 9, 12 with LTE does not really bother me. For the VS995 it's LTE-A (3CA) Cat12 600/150 Mbps but for the H990N it's LTE-A (2CA) Cat6 300/50 Mbps. Now I ask you is anyone on this planet going to realistically even touch or even dream of a download speed of 300Mbps on a mobile network. I'm not even remotely getting this on my home fibre and we're watching UHD movies!!

Did find this
LTE Band 1: This is one of the paired bands that was defined for the 3G UTRA and 3GPP rel 99.
LTE Band 4: This LTE band was introduced as a new band for the Americas at the World (Administrative) Radio Conference, WRC-2000. This international conference is where international spectrum allocations are agreed. The downlink of band 4 overlaps with the downlink for Band 1. This facilitates roaming.
I guess I'll soon find out, not sure how though

Ferg8080 said:
Did find this
LTE Band 1: This is one of the paired bands that was defined for the 3G UTRA and 3GPP rel 99.
LTE Band 4: This LTE band was introduced as a new band for the Americas at the World (Administrative) Radio Conference, WRC-2000. This international conference is where international spectrum allocations are agreed. The downlink of band 4 overlaps with the downlink for Band 1. This facilitates roaming.
I guess I'll soon find out, not sure how though
Click to expand...
Click to collapse
To be on the safe side, I would just go for the H990N or H990DS. You also don't get the horrible, disgusting Verizon watermarks and logos (software and hardware) if you go with either of the H990 variants. But if you're not going to be using Vodafone, it doesn't really matter - because Vodafone is currently the only UK network that uses B1(2100) for 4G/LTE. Have you already ordered the phone?

i have a h990n in the uk all networks with full 4g

Don't buy CDMA phones for use on GSM carriers, or phones not specific to your region! Though nearly all CDMA phones from Sprint and Verizon in the USA support GSM protocols like 2G: GSM, 3G: UMTS/HSDPA/HSPA+, and some LTE bands, they are not always accessible. VS995 doesn't support Vodafone UK's LTE B1. I ran into problems with invalid sims and poor coverage because not all bands were unlocked by Verizon. If you want a V20 save the hassle and buy a GSM unlocked V20: US996, H990, H910 (won't get OTA, so flash H915 KDZ), H915, H918.
More info: https://www.frequencycheck.com/countries/united-kingdom

patato21 said:
Don't buy CDMA phones for use on GSM carriers, or phones not specific to your region! Though nearly all CDMA phones from Sprint and Verizon in the USA support GSM protocols like 2G: GSM, 3G: UMTS/HSDPA/HSPA+, and some LTE bands, they are not always accessible. VS995 doesn't support Vodafone UK's LTE B1. I ran into problems with invalid sims and poor coverage because not all bands were unlocked by Verizon. If you want a V20 save the hassle and buy a GSM unlocked V20: US996, H990, H910 (won't get OTA, so flash H915 KDZ), H915, H918.
More info: https://www.frequencycheck.com/countries/united-kingdom
Click to expand...
Click to collapse
Had a look at the above link and have got the following compatibility
GSM: 2G, 2.5G 100% (2/2)
UMTS: 3G, 3.5G, 3.5G (4G speed) 100% (2/2)
LTE: 4G 75% (3/4)
So I'm chuffed especially after reading this concerning the band/frequency I'm missing...
2.6GHz frequency band
The 2.6GHz band is the other frequency which was auctioned by Ofcom and it’s essentially the opposite of the 800MHz band. So it’s not great at travelling over long distances, meaning that masts need to be closer together to deliver reliable coverage and as such it’s not so suited to rural areas.
It’s also not all that adept at penetrating walls so indoor signal on the 2.6GHz band won’t always be perfect.
But on the other hand with 35MHz blocks available it has a high capacity. So it can cope with thousands of simultaneous connections, which in that sense makes it a good fit for cities and other busy areas.
Click to expand...
Click to collapse
I ordered the phone and hope to get it in the next couple of weeks and I will post back my experiences. I ended up getting it at a good price too

Stransky said:
Hi
I am in the UK also and currently using O2 with no problems. I have also used an EE SIM again with no problems. The only thing you need to be aware that the VS995 will not pick up the SIM APNs automatically, at least that is what I found, so you will need to find the APN for whichever network you use. There are off-line APN finders you can find via Google. Hope this is of some help.
Sent from my Nokia 7 plus using Tapatalk
Click to expand...
Click to collapse
Out of curiousity were you able to update from Nougat to Oreo? I had a quick preliminary look and didn't see any straightforward method via official channels.

Ferg8080 said:
Out of curiousity were you able to update from Nougat to Oreo? I had a quick preliminary look and didn't see any straightforward method via official channels.
Click to expand...
Click to collapse
No, very few American V20 users have been able to update to Oreo as the providers have not released Oreo for the phone. To keep ahead with security updates I use a custom Rom on my V20 (Alpha Rom ) but you need to have the Bootloader unlocked and the phone rooted to use it. Hope this offers some clarity.
Sent from my Nokia 7 plus using Tapatalk

Stransky said:
No, very few American V20 users have been able to update to Oreo as the providers have not released Oreo for the phone. To keep ahead with security updates I use a custom Rom on my V20 (Alpha Rom ) but you need to have the Bootloader unlocked and the phone rooted to use it. Hope this offers some clarity.
Sent from my Nokia 7 plus using Tapatalk
Click to expand...
Click to collapse
Will probably stick with the stock ROM for a while until I'm settled in with the phone. Has choosing the Alpha rom negatively affected the performance of the camera or sound quality at all?
Some of the reasons for getting this phone is the renowned DAC and the camera esp in manual mode (apparently auto could be disappointing).

Ferg8080 said:
Will probably stick with the stock ROM for a while until I'm settled in with the phone. Has choosing the Alpha rom negatively affected the performance of the camera or sound quality at all?
Some of the reasons for getting this phone is the renowned DAC and the camera esp in manual mode (apparently auto could be disappointing).
Click to expand...
Click to collapse
No negative affects. Alpha Rom is actually based on the last stock Rom from Verizon with some modifications.
Sent from my VS995 using Tapatalk

Stransky said:
No negative affects. Alpha Rom is actually based on the last stock Rom from Verizon with some modifications.
Sent from my VS995 using Tapatalk
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Click to collapse
Okay thanks for all your help. I'm expecting to get my phone sometime before Christmas
Just looked at the delivery estimate and it was anywhere between Sept 4th and October??th and it was ordered about 10 days ago. I guess it's to be expected coming from Hong Kong.
:good:

Stransky said:
No, very few American V20 users have been able to update to Oreo as the providers have not released Oreo for the phone. To keep ahead with security updates I use a custom Rom on my V20 (Alpha Rom ) but you need to have the Bootloader unlocked and the phone rooted to use it. Hope this offers some clarity.
Sent from my Nokia 7 plus using Tapatalk
Click to expand...
Click to collapse
Well picked up my new V20 VS995 today and before I launch myself head long into customising it I've posted some questions in the main thread here I would really appreciate any help you might be able to give. I was going to post it here but I thought that would be unfair to load you with a barrage of questions.
The whole process seems so much more complicated than with my Note 4 and I there is a lot less handholding esp with the AΩ ROM'S initial post. For a relative novice it seems an absolute minefield.

Which is best model for use on UK 4G network (Plusnet Mobile)?

I want to buy an LG V20 for use on Plusnet Mobile 4G in the UK. Which model will give me the best chance of doing that? (H910, H990,...?)

itm said:
I want to buy an LG V20 for use on Plusnet Mobile 4G in the UK. Which model will give me the best chance of doing that? (H910, H990,...?)
Click to expand...
Click to collapse
I have the H990DS in the uk and I'm on the three network and it works fine. Any model would do as long as it has lte band 20.

Madmonk33 said:
I have the H990DS in the uk and I'm on the three network and it works fine. Any model would do as long as it has lte band 20.
Click to expand...
Click to collapse
Thanks for the reply. There are some good deals on the AT&T (US) H910, which I've been considering. The quoted network specs for this are:
Networks: GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A
LTE Cat12 700/800/850/1700/1800/1900/2100/2300/2600 (Bands 1,2,3,4,5,7,12,17,20,30)
So I guess it should be fine in the UK?

Hi
The V20 H910 (AT&T) version does not support band 20 LTE only the H918, VS995 and the 990N support all 3 bands used in the UK. If you check GSM Arena website it shows which bands each of the V20s support which LTEbands.
Sent from my Nokia 7 plus using Tapatalk

chinese version vs global version

I got a question . I am from Romania and i bought the chinese 6/64 version of Redmi Note 7. Will the 4G work in Romania? My network provider is Orange. How can i check this info?
Are the chinese and global version same when it comes to supported 4G bands?
And the second question is if you can install the global rom on a chinese version of Redmi note 7? Will the B20 for 4G be automatically unlocked when installing the global rom? Those accepted 4G bands are a software or hardware thing ?
Thanks in advance.

vendetta17 said:
I got a question . I am from Romania and i bought the chinese 6/64 version of Redmi Note 7. Will the 4G work in Romania? My network provider is Orange. How can i check this info?
Are the chinese and global version same when it comes to supported 4G bands?
And the second question is if you can install the global rom on a chinese version of Redmi note 7? Will the B20 for 4G be automatically unlocked when installing the global rom? Those accepted 4G bands are a software or hardware thing ?
Thanks in advance.
Click to expand...
Click to collapse
check this out mate, it says here that the Chinese RN7 with LTE band B3 and B7 will work on Orange Network.. here's the link if you need all the info's regarding RN7 technical specs and comparisons. just navigate with the page and you'll find your answers:
https://www.kimovil.com/en/where-to-buy-xiaomi-redmi-note-7-4gb-64gb
B20 is available to Global version but not in Chinese variant..

Unfortunately, changing ROM won't change the modem ability to connect a band that it is not designed to manage. So, yes it is a hardware issue. The modem of the CN version of the Redmi Note 7 is probably able to manage the B20 technically speaking, but it doesn't have the proper embed instructions to do so. I have read some posts about flashing the modem. It is sometimes possible (when there is no hardware limitation), but honnestly, it is not something you can envisage to do by yourself right now, and until someone with good skills does it and share the method (if someone decides to challenge this someday...). The instructions are coming under binary codes. This is a real quest!
Buying a cellphone that doesn't manage the B20/800MHz in Europe is really a bad idea. B20 is the golden band in Europe, since this frequency allows the most performing penetration indoor, and offers the best distance range (about 15 km around the antenna communicationg on B20/800MHz versus barely 5 km around an antenna communicating on B7/2600 MHz). While using your phone in big cities, you will probably catch a B7/2600MHz or a B3/1800MHz signal on your network. But globally your experience won't be good. In many places where your friends using the same network will have a good signal, you will sometimes have a low signal or just no signal (or a switch to the 3G network). For example, when I check my LTE info right now, in a very dense area (Paris, where my network operates from B3, B7 and B20 antennas), my phone is connected on the B20. For sure, if my phone didn't manage the B20, it would connect alternatively to another available band. But if it "chooses" the B20, it means it's the best signal, so.... And now, imagine when you go to the countryside, where there are lessa ntennas, without being able to connect the antennas running the long distance range frequency... This can't be better.
Good luck, though.