Landrover S1 - Not as invincible as advertised?

I have had the Landrover S1 for some time now, and this is the second time it has broken. The first time was not a hardware issue - the phones software stopped working causing the phone to freeze up. In fairness to Sonim the phone was replaced with no questions asked, however I did miss having the phone when I was in Morocco.

This time however I dropped the phone to the ground by accident (baring in mind the company claim the phone can withstand 2m drops onto concrete), the resulting damage can be seen in the picture (left). The screen has a giant crack in it, whilst I should point out the  phone has continued to function fine despite the screen being mangled, I decided to (for the second time) take advantage of Sonim's "3 year unconditional guarantee". A short phone call to Sonim later and I had an address to send my phone to in order to recieve a replacement, no questions asked; except "what is wrong with it". Can't say fairer than that I suppose.
My issue is that the phone broke in the first place, surely a phone that claims to be literally bomb proof should be able to withstand damage from impacts on the screen? However credit where credit is due, Sonim really do follow through on their guarantee to replace the phone, no questions asked, if it breaks, so in this regard, I can't fault them as a company, great customer service. Overall I still like the Landrover S1, I had been having a few problems with the Microphone when calling people, as my voice came accross very quiet. So hopefully this will be fixed with the new one. The waterproofness of the phone however is still outstanding and is yet to let me down, even when I dropped it in the lake the other day! 14 days until the Landrover S1 Mk 3 arrives.....