List of best smartphones Android for ZoiPer application

0 votes

Hello,

I would like to deploy ZoiPer on approximately 10 android device connexted on a IPBX Asterisk.

For the moment we have not buy android devices, I make test on my android phone (Galaxy note 4).

Have you a list of most recommanded device for ZoiPer.

I search a robust, cheaper and good stand by time (one day or more) smartphone for use only for ZoiPer + gsm call (when wifi is not available).

Thanks in advance


PS : Sorry for my english

asked Jul 29, 2015 in Android by Guy Joubert (190 points)  
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1 Answer

+2 votes

Hello,

This is a difficult question, there are few things to look for:

- Stable phone audio system: Some phones / firmware combinations have unstable audio systems.

The worst phones we have ever tried are HTC one m8 series and alcatel one touch phones.  Maybe newer alcatel one touch phones are better, but the old ones would cause random hangs and reboots. I would not recommend using a custom rom like cyanogenmod, they (used to?) reduce the audio buffers which caused issues on many devices.

- No problems with proximity detector:  Some phones will disable wifi (or stop the application) when the screen turns off. There is a workaround for that in Zoiper, but the screen will stay on and will consume too much energy.

I do not have a list with the models and firmware combinations, but IIRC, mostly HTC phones were suffering from this problem.

- Low Latency: Android has a bit of a latency problem for the audio system, too much time is lost in the android audio system, adding significant delay to your calls. Zoiper does some trickery to keep the latency as low as possible while still achieving the best quality, but the latency will still be significantly higher than on iPhones for example. Google is working on making the latency smaller and each big revision seems to have some improvements.


The google nexus series are most likely to benefit from those changes (some of the audio optimizations are currently only available on the nexus series).

Too make things even more complicated, the latency is different for different sample rates. (Some combinations result in up to 1 second of delay).

You can test the latency with our latency tester: https://play.google.com/store/apps/details?id=com.zoiper.audiolatency.app












answered Jul 29, 2015 by Joachim (11,480 points)  
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Thanks for your reply.

At this time, nexus phone is too big and expensie for us. But i have see new Motorola G 2015 with android 5.1.1 stock, it's a good choice ? have you test this smartphone ?


We are not aware of any issues with this phone, if it is a popular phone and there would be serious issues, we probably would be aware already (we have a loooot of users on android).


Doogee X5 are cheap and good enough ;) We use seven of those at work.

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