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lilotimz

Sprint VoLTE Discussion Thread Redux

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15 minutes ago, lilotimz said:

Columbus, OH is VoLTE launched among a lot of other markets currently not announced. 

Is there an updated list of these markets, perhaps in the Premier Sponsors section?

EDIT: Just found it in the Honored section

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When was the list updated? In the last 5 days? Maybe they are new but I guess someone else will have to check them to be sure. I don't think I will be going back to either market anytime soon.

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VoLTE is available in the Las Vegas Market, and I was able to make and receive calls on it. However, in weaker signal areas it doesn't sound good. No VoLTE in T-Mobile LTE areas though. I wonder if using a Static IP on my Sprint account would fix that. Anyone have any idea if that might help?

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17 minutes ago, MacinJosh said:

VoLTE is available in the Las Vegas Market, and I was able to make and receive calls on it. However, in weaker signal areas it doesn't sound good. No VoLTE in T-Mobile LTE areas though. I wonder if using a Static IP on my Sprint account would fix that. Anyone have any idea if that might help?

I don’t believe a static IP would help. 

You mentioned that call quality was not good in low signal areas, but did you experience any/many dropped calls?

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1 hour ago, RAvirani said:

I don’t believe a static IP would help. 

You mentioned that call quality was not good in low signal areas, but did you experience any/many dropped calls?

Nope. No call drops on VoLTE for the calls I have made. I have had more CDMA call drops with the XS Max, but that was expected with the Intel Modem.

Edited by MacinJosh

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32 minutes ago, MacinJosh said:

Nope. No call drops on VoLTE for the calls I have made. I have had more CDMA call drops with the XS Max, but that was expected with the Intel Modem.

That’s good to hear. Have you tested how weak (dBm-wise) LTE signal can get before dropping to CDMA while on a VoLTE call? I believe you can see dBm values updated every second or so in the Intel field test...

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36 minutes ago, RAvirani said:

That’s good to hear. Have you tested how weak (dBm-wise) LTE signal can get before dropping to CDMA while on a VoLTE call? I believe you can see dBm values updated every second or so in the Intel field test...

You don't drop to CDMA and carryover a VoLTE call. It goes from VoLTE to no service, and the call drops.

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44 minutes ago, RAvirani said:

That’s good to hear. Have you tested how weak (dBm-wise) LTE signal can get before dropping to CDMA while on a VoLTE call? I believe you can see dBm values updated every second or so in the Intel field test...

I know that my signal at my house for Sprint LTE isn’t the strongest, but it’s decent. Can use data without WiFi. So far the worst dead spot for VoLTE is my bathroom. I’m using WiFi calling in my house. I’ll have to see if I’ll drop calls from WiFi calling to VoLTE later when I get off work.

 

6 minutes ago, jakeuten said:

You don't drop to CDMA and carryover a VoLTE call. It goes from VoLTE to no service, and the call drops.

That’s what I thought.

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1 hour ago, jakeuten said:

You don't drop to CDMA and carryover a VoLTE call. 

Yes, that is correct. 

1 hour ago, jakeuten said:

 It goes from VoLTE to no service, and the call drops.

This is not necessarily true. You can drop from LTE to CDMA and drop the call (as CDMA pretty much always has better range and propagation than LTE at the same frequency). I’m curious what signal level LTE gives up at while on a VoLTE call. 

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6 hours ago, RAvirani said:

I’m curious what signal level LTE gives up at while on a VoLTE call. 

If it's anything like T-Mobile's VoLTE, it will be highly variable.  Depending on channel width, signal quality, throughput rate and most importantly, the uplink connection from the device back to the network.  Since devices are very variable on the uplink quality and signal strength, this is really the deciding factor for disconnect on a VoLTE call, not the received signal RSSI (or RSRP).  This is true of CDMA too.  It's the uplink from the device that goes out of range first.

Robert

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