Whilst I have not had personal experience of having my DSRs trashed by non-working apps  or smartphones as reported by other sellers, I do think the DSRs are the problem area that ebay needs to concentrate on.   Sellers who are frustrated by not being able to neg buyers should simply take a deep breath and not post any feedback whatsoever.   A seller has the option to respond to unfair feedback and a calm explanatory reply does more to reassure potential buyers than a vent.   Changing Postage Time to Dispatch Time as mentioned on another thread would clarify the system for buyers.  However if the DSRs are being trashed unintentionally because of technology glitches, this is damaging to good sellers.

Agree.. There seems to be a lot of confusion regarding postage time, some buyers think that  it means how long the post took to deliver it to them rather than how long it took the seller to post it. 

Changing the wording to Dispatch time would help

I have only bought a few things using the Android app and have had no problems with stars, that said; touch screens can be quite fiddly and I see how it could cause problems for those who might have bigger fingers than I do