I am quite surprised, that instead of allowing users to change modules (and thus are forced to build it up with casing and connectors) they didn't release certi

I am quite surprised, that instead of allowing users to change modules (and thus are forced to build it up with casing and connectors) they didn't release certification on doing it and let people drop their phones to the mobile service points all over the world for free or small fee like $1 (including vacuuming insides to add extra value). Such shops would make money on selling modules. Modules could be less protected and delivered without the casing. Changing modules would take ~1-2minutes since the store clerk would be trained to do it and use 2-3 universal tools to open the phone and change the modules. Those 2-3 tools would be also available to buy, so owners could change the modules themselves. But since it would be quite advanced - same as with changing PC parts - it would void the guarantee for whole phone.