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  Reply # 1867273 16-Sep-2017 12:50
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Any idea if Skinny will launch their switch before you are ditched advertising again? I never got to find out from last time how they were purposing to get 2G devices to work on a 3G network.

 

Ironicly, due to 2deg switching off 2G. Some legacy devices are almost certain to be migrated to Vodafone. Meaning Vodafone will be able to justify keeping 2G available for longer.






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  Reply # 1868076 18-Sep-2017 14:44
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Bugger! 99% of my usage is voice or text and 2G sips the battery, giving me 2 or 3 times the battery life of 3G.

 

I joined 2degrees when they were 2G only. How things have changed - who am I kidding - Spark customers would be used to throwing away perfectly serviceable phones every 5 years.

 

Oh well, fair-well to the most advanced 2G network New Zealand ever had.


 
 
 
 


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  Reply # 1868176 18-Sep-2017 18:35
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tripper1000:

 

Bugger! 99% of my usage is voice or text and 2G sips the battery, giving me 2 or 3 times the battery life of 3G.

 

 

Is it still that bad though? When 3G was only available at 2100 MHz and most phones had crappy 3G chipsets it was common for 2G/3G modes to use more battery. Limited 3G coverage required a lot of 2G-to/from-3G handovers while travelling which I suspect caused much of the battery drain issues (rather than 3G itself being the culprit). Some of the earlier chipsets weren't very well optimised but this hasn't been the case for years. Therefore with 900 MHz coverage being on par for both 2G and 3G (reducing the amount of 2G-to/from-3G handovers to near zero) and efficient 3G chipsets I suspect it's now more energy efficient to use 3G than 2G if you have the option.


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  Reply # 1870397 21-Sep-2017 17:09
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KiwiSurfer:

 

tripper1000:

 

Bugger! 99% of my usage is voice or text and 2G sips the battery, giving me 2 or 3 times the battery life of 3G.

 

 

Is it still that bad though? When 3G was only available at 2100 MHz and most phones had crappy 3G chipsets it was common for 2G/3G modes to use more battery. Limited 3G coverage required a lot of 2G-to/from-3G handovers while travelling which I suspect caused much of the battery drain issues (rather than 3G itself being the culprit). Some of the earlier chipsets weren't very well optimised but this hasn't been the case for years. Therefore with 900 MHz coverage being on par for both 2G and 3G (reducing the amount of 2G-to/from-3G handovers to near zero) and efficient 3G chipsets I suspect it's now more energy efficient to use 3G than 2G if you have the option.

 

 

KiwiSurfer:

 

tripper1000:

 

Bugger! 99% of my usage is voice or text and 2G sips the battery, giving me 2 or 3 times the battery life of 3G.

 

 

Is it still that bad though? When 3G was only available at 2100 MHz and most phones had crappy 3G chipsets it was common for 2G/3G modes to use more battery. Limited 3G coverage required a lot of 2G-to/from-3G handovers while travelling which I suspect caused much of the battery drain issues (rather than 3G itself being the culprit). Some of the earlier chipsets weren't very well optimised but this hasn't been the case for years. Therefore with 900 MHz coverage being on par for both 2G and 3G (reducing the amount of 2G-to/from-3G handovers to near zero) and efficient 3G chipsets I suspect it's now more energy efficient to use 3G than 2G if you have the option.

 

 

Yeah, there is a very noticeable difference on my daily (indestructible/practical) phone which is old Nokia 2G/3G with UMTS900. Dunno how much 3G chipsets have improved since it was made, but Nokia's were always quite energy conscious. Coverage at work is fairly poor (2 bars), but it will get 5 - 6 days easily on a charge on 2G and 3 or 2 days if I'm not lucky on 3G. If I flick it to 3G to do some email and forget to switch it back it usually catches me out.

 

The fact that UMTS900 exists doesn't necessarily mean power consumption will be the same between 2G and 3G. It also depends on the network - on 3G it will bump you phone up to 2100MHz if it can, as there is more bandwidth/capacity there. So 2G you stay stuck at 900 MHz but on 3G you can be bouncing between the 900 and 2100. Maybe if you could lock it to UTMS900 you'd see some power savings?

 

I found an app that let me see the band my S5 was using, and I could see it register on band 8 (900 Mhz) and then jump up to band 1 (2100 MHz) and the signal bars drop down. It seems to stick with 2100 until the signal complete fades before it goes back to 900.

 

It isn't only the frequency that matters - 3G is a wide band signal that requires a little more grunt to transmit and a little more processing power to encode/decode. Not sure how much that influences the battery life.

 

There are references all over Google such as this which shows 3G using well over double of 2G - nothing up-to-date though - LTE will be the focus now days.


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  Reply # 1870461 21-Sep-2017 19:27
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tripper1000:

 

 

 

There are references all over Google such as this which shows 3G using well over double of 2G - nothing up-to-date though - LTE will be the focus now days.

 

 

 

 

That document is dated October 2008. A lot has changed in the last 9 years.





iPad Air + iPhone SE + 2degrees 4tw!

These comments are my own and do not represent the opinions of 2degrees.


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