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char remoteNum[20]= "97955845";
char txtMsg9[200]= "Emergency! Ambulance required immediately. Please dispatch an ambulance to: Blk S Level 4 Nanyang Polytechnic, 180 Ang Mo Kio Avenue 8, Singapore 569830";
The compiler can count, you know. Probably better than you can.
What Arduino is this running on?
http://playground.arduino.cc/Code/AvailableMemory