If you're a Sun Cellular subscriber, you can now ask load from your family members or friends who are also Sun Cellular subscribers.This feature is called GIMME LOAD and you may want to avail of this during emergencies.
Here's the way to do it:
Text GIMME
For example, GIMME 09335671234 send 2293.
Note: You still can send the GIMME Load message to 2293 even if you already ran out of balance.