TheForce627

I have yet to see a dual SIM device report any data to the Android OS from the second SIM. At the time of your diagnostic report, it looked like your T-Mobile SIM was active (the SIM PLMN was 310260), but it was not reporting any other data at that moment. The last information it captured appeared to be an AT&T connection on band 17 -- GCI 0112BF10, PCI 353, TAC 4633, EARFCN 5780. (Does that appear to be valid for AT&T in your area?)

 

 

 

-Mike

yes that is correct. I am able to get SCP to show data from Sim 2 though. The only way is to turn sim 1 off then turn it back on and have sim 2 as primary data. I can send a diagnostics after that.

Unfortunately you are not going to get data from the 2nd Sim, dual Sim phones don't work like that, I don't know why people keep thinking they do. Primary Sim phone and data, secondary Sim phone only.

 

Sent from my 2PQ93 using Tapatalk

I can get the data from the second sim though. I forgot to add that when both sim cards are active I have to enable sim number 2 before I enable number one in order for SCP to report on it. If I try to switch after that, that's when I run into issues

I have an interesting issue with my OnePlus 5. I have dual SIMs one ATT and the other TMobile. Whenever I have attached set as the default data card, SCP works normally showing the signal in the notification bar and in the app, but when I switch to T-Mobile as the default card for data. LTE data never shows. I can send logs so you can see what's going on.

Done.

Mike I went back to the band 66 area and sent you a report

When you sent the diagnostics, you were connected to PCI 71. I reached out to someone more familiar with the AT&T network that will hopefully be able to share some insight as to what you are seeing.

 

-Mike

yeah sorry I was home and no longer connected to that site when I sent the diagnostics. If I go back I'll send it again.

Your diagnostic report didn't show anything out of the ordinary at all.. this was what was displayed on the screen at the time:

 

Provider: AT&T B2 (310410)

GCI: 011C0B08, PCI: 71, TAC: 4633

UL EARFCN: 18850 (1875.0 MHz)

DL EARFCN: 850 (1955.0 MHz)

 

All of the background data matches up with the display. EARFCN 850 is what the OS was reporting at the time; that is band 2, and the GCI matches the band 2 pattern. I am confident that SCP is showing reliable data, at least according to your device. I don't know where NSG is getting its information.

 

-Mike

hey Mike. Both SCP and NSG had a pci of 23. Is that the right record? Another thing, normally if I force my phone to band 66 and it is not available it will connect to hspa. In this case it was locked to band 66, unless there's something I'm not seeing.

 

Edit: also my device is rooted, not using the root method with SCP though. Only on NSG

Yes.. the diagnostic report (About > Send Diagnostics) takes a snapshot of the data present on your device at the moment you submit it. I would like to see it though. NSG accesses the modem directly with proprietary methods, while SCP relies on what the Android OS is reporting.

 

-Mike

sent

Interesting.  What does SCP show?

 

And, of course, send a diagnostic to Mike, if you haven't already.

 

- Trip all 3 screenshots were taken at the same time. Do I need to be connected to that site to send a diagnostic?

Those two pictures appear to be different cells.  What's really weird is that the EARFCN being shown in the picture on the right is PCS, but the GCI sector ID matches AWS.  And in the picture on the left, the frequency shown is within the AWS-1 band.

 

- Trip

hey Trip. I locked my phone to band 66. Look at this screenshot. Same pci

Not sure if this is intentional or not but band 66 is showing up as band 4.

How is the RF performance for you guys? It's significantly worse than my s7. Thinking of returning it or seeing if HTC will give me a replacement.

It displays the info of the SIM that is selected for data in my OnePlus 2. The way most dual SIMs work is that it can receive incoming calls from either SIM, and select which SIM for outgoing. But data is through only one SIM at a time. And the SIM selected is displayed in SCP. And there are different preferences that can be set to default a SIM for this and that.

 

However, it could react different for other Dual SIM phones.

 

Using Tapatalk on Note 8.0

thank you! Hoping the OnePlus 5 turns out to be a solid phone. Planning on getting that or the next axon device so I can run a dual SIM setup.

Does anybody know how signal check reacts when using a dual SIM phone? I'm thinking about purchasing a dual SIM phone and running Att and TMobile or Att and VZW.

I hope this pushes them to build out even more in rural areas. I'm sure they would have more leverage when putting up towers and antennas as they can say it is for first responders.

3x carrier aggregation is live in the DC market.

AT&T is now doing carrier aggregation on bands 2 and 30 on the galaxy S7

Pulled this down today. Nice speeds in this market ever since they went 20x20 in band 2.

Finally found band 29. In NYC. Screenshot attached. Pulled 45 down in the middle of the city at 2pm.

Changes in AT&T's plans https://www.yahoo.com/news/m/32b7b79c-8451-3750-a5a9-f2e943aabe87/at%26t-hikes-prices-for-some.html

Aren't the new Silver Line stations above ground?  Which would imply nothing special needs to be done for LTE service there since they would just depend on the local macro sites?

 

- Trip

VZW is throwing sites up left and right around here. What site did you spot they were colocating on, I'm familiar with 495 and 50 but not sure of the site.

 

edit: nvm that must be the VA side, and wrong quote anyway lol

I took my sim card out and chose manual band selection to lock onto 41.

How did you do manual band selection? Are you rooted? The Dialer code to get to RAT selection is locked for me.

Does anybody have any info on Band 29? Where can they deploy it and would they need new equipment?

I wish we could get 20x20 B2 here. Not gonna happen since their PCS isn't all contiguous.

When it first went to 10x10 in the fall is when I first started experiencing band 2 at pretty good distances. Prior to that they had the threshold set at something like -112 dbm so I always fell to B17 pretty quickly, though once I was able to hold onto it about 2.5 miles from the tower when it was 5x5. When they went 15x15 is when it really started to shine though, going to that bandwidth made it stable enough that I can now stay connected all over town just about.

Even when it was 10x10 it was still close to matching B17 which is 10x10 here. Maybe they have the power turned up high or have really tuned their network well.

It's crazy how far AT&T's band 2 reaches in my area. Even before moving to 20x20