milesuy Hi there! If your postpaid contract with Globe has expired but is still active, you can call the 211 or 027301000 hotline and try to request for the unlocking of your Globe-locked and Globe-issued iPhone 5S. Keep us posted because there was a recent post about this service being available only to Platinum subs. (https://community.globe.com.ph/message/119653#119653).
For other carriers? NO
P.S. I would like to buy precious gems with GCASH credit. :p