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WCDMA preferred vs GSM AUTO PRL

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sheek360
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Question WCDMA preferred vs GSM AUTO PRL

Had to hear it from the horses mouth, I called up HTC's tech support. I asked what was the difference between WCDMA preferred and GSM AUTO PRL. The gentleman I spoke to told me that they both have lots in common and that the only difference is that WCDMA preferred will favor 3G and GSM AUTO PRL will favor EDGE.

He continued to tell me that WCDMA preferred needs to reach a low threshold to go straight into 3g from edge. GSM AUTO PRL has a higher threshold, or higher standard has to be met (db of 3g signal) before it will go into 3G.

He mentioned that gsm auto prl will save the user a bit more power because it wont force the phone to continuasly hunt for a stronger signal. Typically this option gives our n1's a weaker signal and slower data speed. But he said it depends on our network in our city.

I also verified this information with t-mobiles tech support. They were a bit vague though. But they did mention that WCDA preferred will prefer 3g and that gsm auto prl is its complete opposite and will only prefer 3g if the signal is strong enough.

What do you guys think? Does this make sense?!?
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sheek360
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Got this

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WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best. (Maybe the Samsung Galaxy S will take advantage of this???)
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this

When using the 'only' options you should still be able to make calls.

To put things into perspective, The Nexus One is set to WCDMA preferred as default and the Droid Incredible is set to CDMA auto (PRL).
from here, http://www.google.ie/support/forum/p...211ac789&hl=en
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sheek360
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Originally Posted by sheek360 View Post
I guess from this we can conclude that we will get a stronger signal and faster data using wcdma preferred, if we live in an area with horrible service. Seems like the guys with excellent service wont be affected one way or the other.

right?
 
sheek360
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just conducted a test. I get no service inside of my sons school with my n1. i put my n1 on gsm auto prl and i left my sons n1 on wcdma preferred. we both walked in the school till we lost service. as soon as we walked out i was on full bars of edge. my son was on 1 bar of 3g. i wanted to repeat the test over and over again but my wife gave me "that" look. BTW my daughters moto cliq had full bars of 3g inside the school and outside the school.

kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol
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RogerPodacter
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here is a really good explanation about the gsm auto (prl) setting from another forum. i'll quote and also link it.

Quote:
Originally Posted by icebike
What that does Roger, is tells your phone to connect using EDGE, and obtain a Preferred Roaming List (PRL) from the tower, and THEN switch to 3G when a data channel is required (which in the N1, is pretty much always because people are checking mail etc all the time).

WCDMA preferred has the phone try to find 3G directly. This takes more power until a connection is established.

You can verify this in the 4636 display, below the Run Ping Test button. You will see the Network Type say EDGE, then, after a bit, it will switch to HSPDA.

If your phone is near your computer speakers, you will hear edge chatter as it obtains its Preferred Roaming List. You may periodically hear a lot of EDGE chatter if you have nothing requiring a data channel running, because it might drop to edge and stay there for unexplained reasons.

Depending on your towers and service availability, you may see no difference in this at all. I live in a strong 3G area, and this does not help me at all. In fringe 3G areas or in 3G areas where there are a lot of 3G phones (cities, near schools, etc) this will help quite a bit.

In Edge only areas it saves a lot of battery by not searching for HSPDA when it does not exist.

Note: I also see something of a speed test hit on GSM (PRL), but this may be just the speed test app doing odd things.
from this thread:
http://forum.androidcentral.com/goog...leep-mode.html
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sheek360
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Originally Posted by RogerPodacter View Post
here is a really good explanation about the gsm auto (prl) setting from another forum. i'll quote and also link it.



from this thread:
http://forum.androidcentral.com/goog...leep-mode.html
Thanks for that. Good read
 
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Originally Posted by sheek360 View Post
just conducted a test. I get no service inside of my sons school with my n1. i put my n1 on gsm auto prl and i left my sons n1 on wcdma preferred. we both walked in the school till we lost service. as soon as we walked out i was on full bars of edge. my son was on 1 bar of 3g. i wanted to repeat the test over and over again but my wife gave me "that" look. BTW my daughters moto cliq had full bars of 3g inside the school and outside the school.

kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol
Damn!!!! When I was 10, smartphone didn't even exist, people would stare at you if you even had a 'dumb phone'. Kids 20 years from now would probably be playing with nuclear powered smartphone. =)
 
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Quote:
Originally Posted by sheek360 View Post
kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol
LMAO, you're family is awesome!
Nexus 4 on walmart family mobile
 
sheek360
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LMAO, you're family is awesome!
Lol thanks
 
uansari1
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Quote:
Originally Posted by sheek360 View Post
just conducted a test. I get no service inside of my sons school with my n1. i put my n1 on gsm auto prl and i left my sons n1 on wcdma preferred. we both walked in the school till we lost service. as soon as we walked out i was on full bars of edge. my son was on 1 bar of 3g. i wanted to repeat the test over and over again but my wife gave me "that" look. BTW my daughters moto cliq had full bars of 3g inside the school and outside the school.

kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol
Ah yes..at my school, the first girl that got knocked up was one of those kids. Don't worry..I'm sure that won't be your kid though. Just kidding! ;)










But seriously..keep an eye on her!

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