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Questions tagged [4g]

4G is the fourth generation of cellular wireless standards, therefore the successor of the 2G and 3G families of standards. The candidates for 4G are LTE (Long Term Evolution) and WirelessMAN-Advanced.

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38 views

Access Channel Impulse Response of LTE signals on cell phone

Is there a way to access channel impulse response information on ios/android or any other mobile software? I was looking at the android developer website but could only find functions that provide ...
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14 views

Internet speed slows down when charging

I have tested two android phone as soon as i plug the phone to charger or powerbank the internet speed drops like 50% to 80% is it normal?
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27 views

Mobile Data Always Active Not Working

I have my android device connected to a wifi router. I know for a fact that the router is not connected to the internet, which I am fine with. On the wifi settings page it says "Internet may not be ...
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36 views

Sim Card Virtualization in JIOFI

I have a 3G android without any sim. For UPI verification in Gpay, a SIM is required. Is it possible to virtualize the sim in JIOFI device?
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101 views

How to successfully complete an LTE RAM dump using “Boost” LG STYLO3(ls777)

When trying the LTE RAM DUMP it's not working. I have a boost LG Stylo3 (ls777) and I've tried the dialer code sequence given and it does nothing... Is there another code sequence I should be trying ...
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50 views

Android shell script to replace PPP chat program?

Since Android does not have a PPP chat program can a shell script be used instead? I am trying to get my android 7 tablet to connect to the internet using my 4g usb modem. pppwidget does not work. ...
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83 views

Finding which lte bands my Samsung galaxy tab supports without rooting?

Everything is in the title It’s not about the bands currently in use but those my device can supports (my cell phone provider is refusing to let me access full of their supportted bands)… As I don t ...
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2answers
452 views

Two 4G sim enabled simultaneously (Jio & Airtel) - Samsung Galaxy On Max

I have Samsung Galaxy On Max and inserted two different carrier SIM cards that are Jio4g and Airtel. It has been written that this device is dual sim 4g. It was working fine till I was using Jio4g as ...
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1answer
184 views

Disable VoLTE, while still using LTE - To force Jio4gVoice to work

I have a Nexus 5X running an unofficial Pie build (https://forum.xda-developers.com/nexus-5x/development/rom-android-source-project-t3827122) VoLTE does not work (no incoming or outgoing calls), but ...
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1answer
286 views

Airtel 4g network not working on certain apps

So I am using Vivo V7 on an airtel 4g data connection and every time I try to open apps like swiggy or foodpanda I get a message saying "there was a problem" "please try again later. However when I ...
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3answers
227 views

is it possible to get location via a cellular network if the device doesnt have a data plan?

is it possible to get location via a cellular network if the device doesnt have a data plan? or does it need a data plan to be able to get location via a cellular network? is a data plan needed to ...
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26 views

Is phone call quality different depending on the connectivity standard?

I've been trying to figure out how to achieve the best audio quality in phone calls, and part of it is finding out whether GSM, CDMA, LTE or other standards/technologies compress the audio the same ...
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45 views

Why does VoLTE deployment only take a “Carrier Update” on iOS for all iPhones to have it enabled, but only a select few Android handsets get it?

I am guessing carriers need to adjust the software, but why isn't this negotiated by Android by default so that no modifications would be necessary? Why is there no equivalent of "carrier updates"?
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1answer
344 views

Why do phones need an OTA update to support VoLTE for certain carriers but they work out of the box for other VoLTE carriers? [closed]

This is regarding unlocked phones sold from stores. A major carrier in my country depoloyed a VoLTE network and it worked even on custom ROMs with very minor problems. Now 2 other carriers are ...
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1answer
372 views

No LTE on samsung s4 mini?

I am using a Samsung S4 Mini Model GT-l9195 with Lineage OS 14.1. I used the LTE Image to install LOS. But actually, I am not sure if my phone is able to use LTE. Because there was also a non-LTE ...
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57 views

How to do a reset my LTE profile? (or fix some type of hardware LTE failure)

My phone, Samsung G920FD aka Galaxy S6 Duo works with band 3 LTE yet lately (two days ago), it sudden stops to work on this band, it simply doesn't connect to it while my other phones connect to band ...
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1answer
56 views

LTE: Lost/Stolen Phone in another country, didn't receive text/data/voicemails after new SIM?

I had an unfortunate situation occur to me where my phone was pick pocketed out of my pocket while on Vacation out of the country. We decided to not cancel the phone line because doing so would ...
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1answer
1k views

XIAOMI Mi A1 LTE bands - User manual or website is right?

Situation: Live in Spain, moving to Argentina. Buy a new Xiaomi MI A1, on the website it lists support to LTE B4 (main band in Argentina). Get the phone, open the box which says GLOBAL Version, but ...
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40 views

Is there a way to list all 4G networks within range?

Does anyone know of a method to obtain a list of all 4G networks within range at the current location? Currently running Android 7.1 on an HTC U11 if relevant.
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1answer
57 views

What are the radio band present in the hidden phone menu?

Not locked to it or anything (plenty of efs backups) just wondering what differences there are between say, the US band and the Cellular 800 band.
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1answer
1k views

Translation of RIL_PreferredNetworkType terminology to human speak?

In Android's source code, I see typedef enum { PREF_NET_TYPE_GSM_WCDMA = 0, /* GSM/WCDMA (WCDMA preferred) */ PREF_NET_TYPE_GSM_ONLY = 1, /* GSM only */ ...
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1answer
37 views

4G network compatibility in France

I read somewhere (here) that in France, in order for the 4G to work ideally with all carriers, one should have a smartphone with the 4G network spec: "FDD-LTE : Bands : 1/3/7/20/28". I am considering ...
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1answer
232 views

Get SIM card connection info

If I want to know if I am connected 2G, 3G or 4G, how do I check that on Android? I don't seem to have any default SIM-related app on my phone, nor does the SIM setting screen give much information ...
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96 views

4G signal with mobile turned off

Recently I have noticed that my cellular company (TIM, I'm in Brazil) has been charging me for network connections daily. I rarely use cellular network since at home and in my job has wifi and I don't ...
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55 views

Receiving a call downgrades to 3G/H permanently?

Some background I'm using my Nexus 5X running Android 7.1.2 as a wifi access point for my computers. I'm subscribed to an unlimited 4G plan, no upper limits. I got the phone last Fall, which is also ...
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1answer
23k views

You have lost data connectivity because you left your home network with data roaming turned off

I get a "you have lost data connectivity because you left your home network with data roaming turned off " message whenever I turn on my 4G connection. The problem is my sim card if from the same ...
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3answers
2k views

Disable mobile data permanently

A strange request I know... but I am quite keen to disable mobile data from my phone permanently (as opposed to just switching it off in the settings) so that I can only browse the internet when I'm ...
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61 views

Micromax E483 calls are not establishing until mobile is restarted

Recently I bought Micromax E483, it was working very nice but recently i am unable to make any call. Even after rebooting the mobile, calls are going only once or twice.
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250 views

Can a phone support lte band 41 but not support band 38?

The only difference in Google Pixel's versions for North America and for the rest of the world is their support for different lte bands and carrier aggregation. E.g., in tech specs (https://madeby....
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2answers
4k views

Cellular Network Setting Won't allow to select preferred network type to LTE

Android is not letting me select preferred network type to LTE for my 4G SIM, because I have selected the other SIM for data. The thing is, it only lets you select LTE as preferred network for a SIM ...
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1answer
33k views

Bypass T-Mobile Hotspot Tethering Limit by using the phone's unlimited plan?

I have the 10gb hotspot plan for tmobile but I also have unlimited data when I'm on my phone. Is there a way to bypass the hotspot limit by using the unlimited data from my phone instead? I have the ...
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1answer
777 views

How to root Huawei Y3II L02 4G

How do I root my Huawei Y3II and when would a method be available for my device
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1answer
5k views

how to make swipe elite plus volte phone

I have swipe elite plus and and want to make it volte but problem is there is no update from swipe and there is no custom rom available for swipe elite plus. please help
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1k views

Acceptable Signal Strength Ranges for 2G/3G and 4G

I have been logging signal strengths on my phone and am trying to understand what ranges can be considered "Good" and "Bad". RSSI is a measure of signal strength for GSM (2G/3G): -50dBm to -113dBm ...
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3answers
19k views

Internet always on when VoLTE enabled in Redmi 3s Prime

I m using Redmi 3s prime with jio 4G. Whenever VoLTE is enabled, my device internet is always active, regardless of whether mobile data is on or off. I can browse the Internet and watch online video ...
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3answers
9k views

“Unfortunately, the process com.android.phone has stopped” error

"Unfortunately, the process com.android.phone has stopped" error occurs when i try to change my network mode to LTE only. The phone i'm using is Samsung J5(SM-J500H).
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1answer
36 views

I mistakingly cancelled my android software system update I can get it back again and what are the procedures

I mistakingly cancelledy android system update Please can any one teach me the procedure of updat my android system software ? There is no select option from the main men about phone network ...
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402 views

APN settings vanish after some time of LTE data usage and only return on restarting phone

I am using OnePlus 3 and Reliance Jio sim. Android version 6.0.1. I am able to use 4g data via the sim. Major access point name settings that I get by default from the network: APN: jionet mcc: 405 ...
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1answer
3k views

How do I unlock 4G bands?

I'm using Xiaomi MI4. In India it doesnt support 4G bands, is there a way to unlock 4G bands for this device?
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2answers
47k views

Which one is the 4G sim slot in Redmi 3s prime?

I have acquired an Jio sim and I am using a Redmi 3s prime. But I don’t know which one is the primary 4G sim slot in the phone. Is it the nano one or the micro one? Or can i choose any one of them? ...
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1answer
573 views

Can the Nexus 6P use GSM data if the connected Wifi has no route to the internet?

I have a Nexus 6P and use it to connect to a Phantom 3 4K drone using WiFi. Obviously, because it's a private WiFi network with no external connectivity my phone can not contact the internet via WiFi. ...
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0answers
103 views

Can android use wifi as client to a Sony camera, and also have an active 4G-connection at the same time

I have a Sony QX1 camera that acts as a wifi AP. My phone connects to it as a client, and I use the playmemories app to control the camera. Is there any way I can have both wifi and 4G active at the ...
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0answers
1k views

Is there any way to add LTE/WCDMA/GSM (Auto) option in a rooted non LTE device (Note3 Neo)?

So my phone is an Indian Note 3 Neo (SM-N750) which has an Exynos processor. I need to activate the above requested option so as to trick a LTE only sim into believing that my device can support LTE ...
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1answer
62k views

How Do I Activate 4G LTE Only On Samsung Galaxy A5(2016)

I use Samsung Galaxy A5(2016) and have just upgraded the firmware to Android 6.0 (Mashmallow). The phone supports 4G but the option to set it there is LTE/3G/2G (auto connect) on Network mode. How ...
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1answer
593 views

4g icon always showing on my S6 (But my cellular network is not 4g)

4g icon always shows on my top right side with signals bar on my newly bought(second hand) samsung S6 mobile. problem is that my cellular network is not 4G. It only supports 3G. Is my S6 software ...
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1answer
826 views

LTE Bands for European Galaxy S7 (SM-G935F) while in the US

I have a European model of Samsung Galaxy S7 Edge (SM-G935F), 32GB version. It is a SIM free phone, not locked to any particular vendor. I am aware of region lock, but from my understanding it should ...
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1answer
126 views

Since which Android version does it detect internet connectivity on Wi-Fi?

For a project I am working on, I need to connect the phone to a WAN (without internet access) and to the 3G/4G network (to have an internet access). On my phone (Motorola Moto M 3G, Android 6.0), the ...
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1answer
843 views

How to enable 4G in Samsung Galaxy S4 SPH-L720

I have a Samsung Galaxy S4 SPH-L720 I want to use 4G. How can I enable 4G in Samsung Galaxy S4 SPH-L720.
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1answer
101 views

Trouble connecting to 4G when Wifi enabled, but low signal

I have a Samsung S5 Neo (SM-G903F), Android 5.1.1 My I access internet apps/sites when i am close to my router, works great. But when I go up a floor, and am basically out of range from the Wifi ...
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2answers
3k views

Does switching my phone from 3G to LTE only matter if I use mobile data?

I have a Xiaomi Redmi Note 3 Pro with Android 5.1.1 and MIUI 7.3.2.0. In my settings I have the option to choose a network type. The options are "2G", "Prefer 3G", and "Prefer LTE". I only use WiFi to ...