Samsung are worse
Mine just refused to boot.
Support was hidden option on their phone system.
Had to wait for them to send shipper. Then sent it back to them.
"Where's my phone?"
'Oh we were going to charge you £200 for the broken screen. Will you pay?'
"The screen isn't broken, it's just dead"
'Yes it is'
"No it isn't"
Grudging - 'If you pay we'll re-assess the damage'
"Well screen wasn't broken when I sent it to you. Fine. You have another look"
'Oh we can't, we returned it to you as being uneconomical to repair'
"IT'S UNDER WARRANTY!"
'Not for you breaking the screen it's not'
Phone arrives back in exact state I sent it to them, intact screen and all.
"I've got the phone in my hand, the screen is fine, can I sent it back SO YOU WILL REPAIR IT?"
'Sir, the screen is cracked'
"It's in my hand and absolutely fine."
'I don't know what you're trying to do sir. You have broken your screen and we will not fix it'
"You are THE worst company"
'OK, we'll let you drop it off at our nominated third party system, but we'll need your credit car number to charge you for the repair to your screen and anything else they find'
I actually gave up at this point and bought another phone.