this happened after fate stay night right if not why can Gil be summoned? we all know this has something to do with fate zero. in 3 fsn routes we know that gil is dead in each route but I don't know if he is dead or not in FHA. so in conclusion he is summoned back in fsf.
i am pretty sure that mages hates technologies so that they use cellphone instead than an iphone.
this could be the 6th holy grail war i think because is set 4 years after the event of fate stay night because the april fools "fate states night" was set around 2008.