Galaxy S3 GT-I 9300 International version works well with Record Mode 4.
If it can only record your voice (the caller's voice is very weak), this indicates Samsung disabled the call recording feature of I9300 in your country, please
- try to enable the Tune Samsung 1, Tune Samsung 2 and/or Tune Samsung 3 options.
- if the problem is still there, you should root your phone, use Record Mode 22, 23 or 24 to record.
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You can download Boldbeast Recorder without paying from Google Play, it's initially a trial version. You can buy a register code to make it become the full version. The trial version works exactly the same as the full version, except that after 7 days the trial version can only record 30 seconds every time.
At this moment Boldbeast Recorder doesn't support cloud disks. We'll add this feature in future versions.