in survival mode to die played back with your experience and be was with armor she also back .not are losing the armor to die nor experience

^{Addition by Mega_Spud:}
When you die in survival mode, you do not lose your experience points or armour.

Steps to Reproduce

• Gain xp and equip armour
• Make sure you are in survival (/gamemode 0)
• Die (/kill)
• Observe that when you respawn, some xp remains and you are still wearing armour

Tested on Samsung TabPro SM-T520 on Android 4.4.2

Update:

As of 1.0.0.0 the player will lose armour and most xp upon death, but it seems that the player will always respawn with 2xp levels.

• Gain xp in survival (eg /xp 500L @a)
• Use the command /kill @p
• Notice the xp level when you respawn