Originally Posted by cpct
* Can it also record calls with Viber or Skype?
* Is there any additional advantage of the recorder having root access? (in case of Galaxy S3, which is already supported without root)
Voip calls can't be recorded (such as Skype, Viber, WhatsApp, WeChat etc), no matter what recorder you use in the market.
Some phones have bluetooth recording problems in the ROM, if you root the phone Boldbeast Recorder can fix the problem.
Galaxy S3 GT-I9300 has bluetooth recording problems in the ROM but it can't be fixed because the WM1811 audio chip (hardware) doesn't support bluetooth recording. Other Galaxy S3 variants (such as SCH-I535, SGH-T999, SGH-I747, SPH-L710 etc) can be fixed.