Back in the day, I used to be able to see a list on my AT&T Motorola Razr of all the cell provider signals in my area. For instance, if I were in Pittsburgh, I could see the list of available networks compatible with my phone (the phone would apparently create the list from actually getting signal from those cell towers) and if I felt like it, I could switch to a different provider that had a stronger signal.
Now that my gs3 is unlocked I'm hoping I can find a way to see that same information. For example, the AT&T signal in an area might be terrible, but there could be another provider that will give me "roaming" coverage with a better signal. I would then switch to that roaming coverage voluntarily on the fly.
Anyone know of a way to do this? Under settings / more settings / wireless and networks / mobile networks I find "network operators". Currently only "default setup" is listed there. But this is where I'd expect to see other network signals that my phone is getting.
Hi All,
I've trawled and searched but cant find anything specific to help me resolve my issue:
I have a Note 8 with 3G (GT-N5100) which I purchased from overseas as the 3G versions are available in Australia.
Since first receiving it I've had issues and had no support from the supplier. Initially it was locked in Factory Mode which meant Rooting and flashing the device. Once this was fixed I went out and bought a Mobile Data SIM to take advantage of the reason I bought it from overseas. However I cannot get any mobile data access.
I have tried the following:
Getting a new SIM
Have the carrier re-provision the service. This has been tested in a Note 10.1 and is working fine.
Tried different firmware.
Updated the APN's to no avail.
And today updated to 4.2.2
But I still have the following issues under device status:
Network: Unknown
Signal strength: -85dBm 14 asu
Mobile network Type: UMTS:3
Service State: Out of Service
Roaming: Not Roaming
Mobile network state: Disconnected
My Phone Number: Unknown
IMEI: 004999 and some more numbers so there is an IMEI
IMEI SV: 01
When I swap SIMs to different carriers the Data APN's change to match the carrier, so it looks like the SIM reader in the device is picking it up. I also have the signal strength meter in the top left.
I'm sure it probably related to the device not being sent out in an active state (ie Factory Mode) and will need to have a setting turned on to enable the modem, I just cant find a suitable reference to doing this.
Thanks for you help.
Simon
Looking further into it, as its showing UMTS 3 something is not quite right here.
I believe that I should be on UMTS 5 which is for Telstra Australia and using the 850Mhz network band.
What controls this and how do I change the bands?
** Further reading suggests that I need to change the CSC. After following a number of articles it looks like I cannot select the XSA CSC within the German ROM. I'm assuming I'll have to wait for a different country to become available that has Australia in it, does this seem correct or can I add CSC information without having it in the distribution file?
hello, i have tmobile n900t and only have 3g reception, problem is that 3g isnt always there (like in basement or outside town), phone then should automatically shift to E but it doesnt. i live in country with 2g network on 900mhz. i have full signal bar reception but im not registered on network, cant make receive calls or anything.
is there any help for this? do something to phone software?
or maybe change the network carrier; i wonder whats the gsm bands that sm n900t works on?
heres details my carrier is under the name "VIP NET d.o.o.", also theres frequencies of other carriers in my country. -> http://www.hakom.hr/UserDocsImages/...ne pokretne komunikacijske mreze-20121029.pdf
help pls
im pretty sure that my apn and modem are good
Sorry, I did not find the correct forum for a Samsung a3 2015.
I have an a3 2015 that's not finding any network, I suspect the simcard en card reader is functioning because when I start the phone it asks me for my pincode and I'm able the login to the phone.
It has a valid imei, but when i try to call it says "unable the register on network"
Has anybody seen this problem before and knows how to fix it ?
That could be caused by, including but not limited to: Low signal strength (ignore signal bars, phones could select other MNOs and measure that), bands in coverage are not supported by the phone, tower or its backhaul is down for maintenance (or failure), IMEI/SIM (ask your mobile network operator anyway), circuit switching is not supported or out of coverage of the mobile network operator, the CSC in your ROM is not applied correctly for (packet switched) VoLTE (if the mobile network operator supports it on your device), antenna failure, the wrong mobile network operator is manually selected in the network settings, too much interference from neighbour cells on the same channel, bad reselection/handover, the signal has been 'echoed' too much, too far away from the tower for the timing advance, too far away from the tower for the RACH parameters.
Probably not...
Device is locked to LTE only. Or locked in some other way.
1. try to put your simcard on different phone. is it work? if yes, so your sim card reader is broken
2. have u reset your device to its default state? if yes and still the same, u have to reflash the whole rom through ODIN. if u haven't try it, do it now.
3. use another simcard on your phone, see the signal bar, is it there? if no signal, then the answer could be on the number 1 / 2.
4. what u did until u lost your signal?
I've tried the simcard in another phone, it's working.
Can the simcard reader be broken, even if it asks for a sim pincode ?
The phone was working until they pushed some updates, i've tried a factory reset but without success.
I've been reading on forums the problem could be a QCN file or a cert file ?
Is this also replaced when reflash the phone ? ( new a this, so I don't want to brick the phone.)
Where can I find the correct firmware ? Is it country related or just a300fu is fine ?
The thing i find weird about it is the phone is not showing no signal icon without the simcard insert (first icon on the link)
But shows a gray singal icon (like the second icon on the link but completely gray, without the bars).
http://newsandguides.com/samsung-galaxy-s3-android-notification-bar-icon-guide/)
update: when I turn airplane mode on and off, the signal icon is showing signal bars without a sim card insert.
Nobody that can guide me to the correct firmware ?
peter43 said:
Nobody that can guide me to the correct firmware ?
Click to expand...
Click to collapse
You know the phone's model. For the CSC (country),
Use the one in your phone, there are apps to read CSC or use "getprop ro.csc.sales_code" in a terminal emulator.
Use the one of your current location/mobile network operator, the displayed 'location the CSC belongs to' on CSCs might not be accurate. It might not apply correctly.
Use a different one, but some apps might be customized differently, there are indeed some cellular configurations but it's mostly higher features, not basic functionality (though there are some). It might not apply correctly.
For the version, try an upgrade or the same version. Open the stock recovery to fully apply the CSC. For downgrades, the number in the middle of the firmware version can't be reduced. If a downgrade causes the loss of cellular, wipe data or return to the previous firmware.
In most cases I highly do not recommend attempting to restore the EFS, flashing PIT, or downgrading to Lollipop on A 2015.
The signal bars being 'blank' after an insert might be because the tower is simply distant. Calls could work on another phone if the bands (or selected RAT on the phone - 2G/3G/4G) of a nearby tower or VoLTE/VoWiFi is supported. Appears without a SIM, or could be suddenly raised with the SIM, might be because the phone has selected other mobile network operators (not related to your SIM), for measurement and limited use... you can view the transition here *#0011#, there are a few others like this but it should be enough, it is MCC(country)MNC(operator), also called PLMN ID. For the signal strength, while your mobile network operator is selected, RSSI is the signal strength of that channel, RSCP and RSRP is approximately the signal strength of the cell not canceled out by interference, ecio,ecno,rsrq,sinr,rxqual are signal quality.
Maybe the spectrum of the previously good tower has been refarmed (the frequencies previously used on 2G is now on 4G for example), or anything above, or an update somehow broke band support.
Before modifying firmware, try moving around, to connect to other cell towers of the mobile network operator of the SIM, the current band should be in 0011, check which bands your MNO uses, the list of bands the phone supports are on the internet. If for some reason the plmn id isn't in 0011 there are apps to display it.
I found out that *#0011# gives you access to the service menu.
q0000 should give access to the network modes, but this is not working, is there an other code a should use to get access to the network modes menu ?
peter43 said:
I found out that *#0011# gives you access to the service menu.
q0000 should give access to the network modes, but this is not working, is there an other code a should use to get access to the network modes menu ?
Click to expand...
Click to collapse
q0000 probably does not apply to Android Lollipop and above. On lollipop and above, it's *#2263# for band selection, marshmallow, *#2683662# (and others), for channel selection and all that, even fewer on Nougat, even fewer on Oreo. Root might be required, but those codes are available in some CSCs (mostly US carrier ones) for some devices without root. Compare *_keystrings.dat in /system/etc.
For the other kind of network mode, also known as rat (radio access technology), 2g/3g/4g, apps might be able to open 4636 without root, there's the full selection.
Tried both codes but without result ...
The phone is running Android 6.01
Not registered on Network
Hi, I have the same problem with my samsung galaxy a3 2015. I tried several ways to fix it such as flashing stockrom,factory reset And even then tried a custom roms but still have this issue. This issue can be only Fixed by replacing network I.C to a New one.
Its only the problem of network i.c .
Hello, I moved from zui to Pixel Experience on february. On that time I didn't have the option to enable 4g+ on zui yet. Is there a way to enable it being on a custom rom, without wiping or reflashing anything?
Thank you
Usually the phone switches between 4G+ and 4G depending on the area. Carriers make their networks interlaced so that the internet connection doesn't drop whenever 4G+ does not work. So it's nothing unusual to see 4G sometimes at the status bar.
You don't have to do anything to enable 4G+, if your location supports intra band CA your phone will automatically latch to 4G+
If you still want to forcibly enable 4G+ then
https://forum.xda-developers.com/lenovo-zuk-z2/how-to/enable-carrier-aggregation-lenovo-zuk-t3702194
How to enable 4G+
4G+ / LTE+ also known as CA isn't only a device related feature. Yes off course the device/rom has to have support for the same but its ultimately on your Career to support & offer this feature. So first thing to ensure the service is available under your Network Service Provider and its available in your locality also
ZUI 2.5 (Indian) having baseband 1.76 do support this feature. I have personally seen it working with stock ZUI or with non treble ROM running over this baseband. So if you are with that baseband of higher (like baseband 1.70 from Chinese ZUI 3.5), your phone probably ready for the feature.
Career plays the ultimate role here, so make sure to test with a SIM Card from a friend or relative to check for 4G+/LTE+ on different network. For me, Jio 4G regularly switch to 4G+/LTE+ in my location Kolkata. But mind you not all cell tower or location shows this icon. So some places offer regular 4G.
Last but not the least, here in my place, that's India, with or without 4G+/LTE+, network speeds are more or less comparable to a proper 3G at max. Often I see 4G+ icon and network speeds are like old 2G age !!