Some countries have silly limits on the amount of currency you are allowed to take out of the country. Bitcoin can function as cash in some instances and it adds to your spending budget, if you have a extra
method of payment. It's so convenient and fast, and hassle-free. You also have a lower risk of theft / loss when you travel abroad and you have no safe way to store your currency.
I would rather walk around with a mobile phone and draw little attention to myself, than carrying a wad of cash and painting a target on my back to all pick pockets out there.
I really hope your mobile phone never get stolen (or lost) otherwise you lost also your valued
BTC wallet. Here, a lot of mobiles are reported as stolen by tourists. Probably if use draw out an iPhone, the last Samsung Galaxy or any other valued smartphone, you're still painting a target on your back to all thiefs & scumbags in the neighborough.
You do not have to keep your whole stash on your mobile wallet.
You could re-charge it from any online wallet provider not connected to your wallet.
I never keep more than 25% of my whole stash online anyways... it's safely tucked away on paper wallets and cold storage.
It's just a extra option, if you become a victim of theft {You could easily replace a phone or use your partners phone and continue as normal} It also buy you some time to
sweep the address connected to your phone, before they figured it out.