repair broken jpeg's

Hello folks

My wife has recently made some pictures with her smartphone that are pretty important to her. The problem is that some of them seem to be broken as they cannot be opened without throwing back an error.

I read some FAQ's and information on the net and I downloaded JPEGsnoop to see what would happen, and I got this error on one of the pictures:

Code:

Filename: [G:\tmp\20151015_134157.jpg]
  Filesize: [1994852] Bytes

Start Offset: 0x00000000
*** Skipped 1994851 marker pad bytes ***
  OFFSET: 0x001E7063
WARNING: Unknown marker [0xFF00], stopping decode
  Use [Img Search Fwd/Rev] to locate other valid embedded JPEGs

I don't really know what to do next though. Can these pictures still be recovered, one way or another?

Thanks