Database Info

[Q] 4g connection issue-keep dropping down to 2g

I just got the 200mb data plan It support 4g
but HTC sensation keep dropping down to 2g
I read from other site to change the sim card and i did still it keep dropping
i try WCDMA ONLY for the network 4g will stay connected but then my phone signal will drop
its been a known issue for this phone i mean its is the best phone on tmobile right now but what is the point if it keep dropping connection
does anyone know how to fix it
i read somewhere that it has to do with the signal band as well

Same here, but mine does this once in a while. Not often.

Shoot I thought I was the only one.....what speeds are you guys receiving over the "4G" network?

i call tmobile up but they didn't seem to help much at all
i mean if i have to go outside to use 4g what is the point
i have 4bars signal inside the house just that it keep switching to 2g
someone told me 4g connection is separate from phone signal
but if so then how come when i switch to WCDMA ONLY mode i get 4g connection, how come my phone signal drop to 0 bar

I get it very rarely as I said. I'm getting good speed over 4G:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

im on my third sim card and still had spotty 4G coverage...installed the new InsertCoin RC1 2.3.4 and it seems to be working great now...

@OP, is this your first 4G phone?If not, what kind of signal were you getting before? If you get good 4G on another phone but not this one ask for a warranty replacement.
Is this only happening in your home is it everywhere you go? If it's everywhere, see previous question.
If it's in your home only Where do you live? Call T-Mobile and ask about the new 3G in home repeater. It's being trialed in a few markets but I can't remember which ones. Maybe you qualify for one if your having signal issues in your home.

this is my first 4g phone
what is InsertCoin RC1 2.3.4
i would like to try see if it work for my phone

MZ600/MZ602 HW/SW differences

I am a little bit confused and overwhelmed at the same time with this tablet.
I own a MZ600, however i do not currently use the 3g. However i plan on eventually upgrading it(myself) with the 4g module.
I would like to upgrade the SW without losing the ability of the future wireless upgrade. I have flashed multiple different roms on here so i am familiar with fastboot and CWM flashing, as well as flashing via SBF if things get too harry.
Here is the confusion; from everything I have read, the MZ600 and 602 are one in the same; the 600 becomes the 602 via the HW and SW update of the 4g PCIe card.
From all of the research i have done on this, This is the only HW modification(along with 4g sim card) during the 4g/LTE upgrade. I have been unable to find any evidence to prove this wrong.
During the install, if sent to verizon/MOTO or done manually, the software is not installed until After the HW install. So what this should mean is that the XOOM should boot up with the PCIe card installed, however it will not be recognized due to lack of drivers and 4G will not be useable due to lack of Radio/Baseband and drivers, however the XOOM should still be fully functional as the original MZ600/3g device it was designed to be.
http://www.ifixit.com/Teardown/Motorola-Xoom-Teardown/4989/1
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
http://www.sierrawireless.com/productsandservices/AirPrime/Wireless_Modules/High-speed.aspx
http://www.xoomforums.com/forum/motorola-xoom-general-discussion/18944-parts-convert-xoom-3g-4g.html
Code:
1. 4g software HLK75D build (get it here: MOTODEV > Products > Device Software )
2. 4g lte radio minipci board/antenna (easiest way to get this may be buying a damaged/nonfunctional 4g xoom/xyboard for parts off ebay)
3. 4g radio cdma lte baseband (get from xda developers site or here: http://goo.im/devs/teameos/radios/im...ios-update.zip)
4. Verizon SIM card (get from Verizon wireless)
5. Star/Torx (T5/T7) screwdriver (can be bought anywhere for less than $10) this is needed to remove two torx screws at bottom of Xoom so back will slide down, and giving access to lte radio pcie board slot
Only when the SW is flashed will it become an MZ602 and have the 4G connectivity.
As we know it is possible to flash the MZ604 builds to others, however it will deem all wireless(other than WIFI) useless and will no longer work.
So, the million dollar question that i have been unable to find anything about; Can you flash an MZ602 rom/image to an MZ600/3g Xoom? If the hardware is identical and the only difference is a miniPCIe card that has a non modifiable rom, the only differences is in the software of the xoom. Interms of the new wireless technology, the differences lie in the radio and baseband, however not having the module installed should not cause any issues with booting and functionality. As long as the boot loader, kernel and system are installed there should be no problems.
Likewise, if this Is correct, you should be able to flash between 600 and 602 builds(why you would want to, I do not know).

i727 "no sim" error on SOME cards

I have an unlocked AT&T Skyrocket SGH-I727 that is very picky about which SIM cards it accepts. I have seen a few similar forums, but nothing that fixes or seem directly applicable so want to start a new discussion.
No SIM Card
Similar problem but I'm not locked to any particular network, rather it is a few networks that work, a few that don't (all GSM).
No sim card error?? Any solutions??
My problem isn't no signal, it's no SIM.
"No sim" issue on Skyrocket
SIM card tray in my phone doesn't appear to be loose.
No signal after sim unlock
Not working at all, no solution.
I was running Cyanogen Mod with no problem on China Unicom (could use also China Mobile 2G) but on a trip last month to Bolivia was surprised that the phone doesn't accept any of the local SIM cards (such as Tigo, a GSM network) while an HTD Status and my backup SGH-i777 worked with all of these networks.
I tried a few different ROM's before flashing the i727 phone back to stock using Odin. Other than installing Team Win Recovery v2.2.0, it's plain stock, not even rooted. See below:
Android version 4.0.4
Baseband version Unknown
Kernal version 3.0.8
Build number IMM76D.UCLF6
While back in the US I tried several other cards, including an AT&T SIM, Straight Talk (actually from AT&T) and it also said no SIM. I've found that the China Unicom SIM works perfectly and a few others (see photo below) consistently work fine. I'd really like to get the phone working again on all of these GSM networks like my i777, HTC and i9300 do.
I've tried flashing three radios Radio_RIL__I727ATTKJ2, Radio_RIL__I727ATTKK1, Radio_RIL__I727RUXKJ7 but other than making T-Mobile 3G work, haven't helped me use any of the other SIMs.
Can anyone help with this? Should I be flashing another radio, replacing a part of the hardware (warranty isn't an option)? I'll buy a case of Redbull, Guinness or similar if I can get this working.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

read returning to stock sticky, perform a reset afterwards, if still having issues, then either faulty phone, like sim tray or its contacts, or the unlocked method was fracked up in one way or another, try the free unlock method and see what happens, its in the 1stop sticky

[Q] Most recent radio? [SOLVED]

Haven't had this phone very long so I know nothing about the radios. Not sure how much of this matters but I'm on i9020t, currently at&t but soon tmobile, east coast/appalachian area, running JellyB-tsm (4.2.1). Thing is, I went and flashed one of the five I downloaded and it worked so I moved on, now I'm getting bad calls and wifi problems.
Different but related problem, see post 3...

Re: [Q] Most recent radio?
Try here lot to readhttp://forum.xda-developers.com/showthread.php?p=14564429
Sent from my Nexus S 4G using xda app-developers app

Re: [Q] Most recent radio?
Just flashed the latest radio on the sprint model. It increased my call quality and wifi issues I was having.
Read through the radio thread I know some of them help in some areas but make other signals worse.
Sent from my SAMSUNG-SGH-I717 using xda premium

Alright so here's my recent issue. Just switched from at&t sim to tmobile sim. I entered the apn settings straight talk says I should and I'm getting excruciatingly slow data. I stumbled across a few different settings for tmobile apn and none of them even gave me a connection. I'm about to start flashing radio after radio to see if anything works but if someone knows something else that might fix it (ie working apn settings) let me know.
Sorry this is so big but upload isn't working here.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
n2d551 said:
Try here lot to readhttp://forum.xda-developers.com/showthread.php?p=14564429
Click to expand...
Click to collapse
This is where I got them but it doesn't really say much about them.

9020a and 9020t have different radio hardware
they are not interchangeable
...so i would ASSume neither are the sim cards
fwiw

Please check IMEI label under the battery for your actual phone model.
An i9020a won't work on 3G 1700 band, you are getting 2G GPRS data speed (the little G on signal icon)

Apparently I'm just not in tmobile's 3g network, didn't even occur to me considering every other major provider works great here. I also didn't realize that just the G symbol was 2g or it probably would have clicked. So anyone wanna trade a 20t for 20a?
And both sims worked, but with the at&t card I only had an edge connection.

IF your 3G internet download is ridicolously slow..

Thought I put this here, in case someone has the same issue.
Just got my Orange UK S4. Orange also run a 4G network called EE, and my phone is EVR ie EE network coded.
My contract is NOT on the 4G network, since I didnt need it.
My first attempt at using the internet connection (away from wifi) was a download of a 1.5meg PDF attachment in the email app, and it was ridiculous slow, like it took 5 mins
Also the browser was not responding or downloading data at all.
So had a brain wave and went into network settings/more networks/mobile networks/network mode/ and changed from 2g/3g/4g, to "2g/3g"
and this solved the issue perfectly.
I think the problem is that in the 4G mode, the phone keeps trying repeatedly (like for every packet) to connect in 4g, and gets rejected by the network, so downshifts to 3g or HDSPA for downloading one packet, and repeats the whole merry cycle...
Hope this might some confusion for others in the future.:laugh:

More likely that the phone was camped onto an Orange 3G bts initially. By swapping network type selection you forced it to pick up a tmobile site....remembering that tmobile and orange share each others networks now under the banner of EE.
A lot of orange sites were never that fast anyway, even worse now the join with tmobile. They are relying a lot more on the tmobile 3G sites.
Sent from my iPad using Tapatalk (how ironic is that eh)

On T-Mobile here and switching LTE off makes absolutely no difference to my speeds :/ Ran a test with LTE on and off and I get 10Mb on and off.
Sent from my GT-I9505 using Tapatalk 4 Beta

No probs on 3 network :good:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

OP here!
The first download was crazy slow, 1000 times slower than when I was on the pure Orange network, but it seems fixed now, and on my new rom flashed yesterday, it seems ok.
Completely agree about the orange/EE service at present. It has become terrible, I think they are shoving all subscribers onto one network, and its becoming harder to make a call without it dropping etc... And this is in West London!