Sending SMS with AT commands, SGH-A800
 

I've got my phone setup on a serial cable and I'm able to issue certain AT commands.

However, whenever I try to send an SMS using +CMGS all that I can see on the phone itself is a blank message. Reading the message with +CMGR I can see some of the message but the end looks corrupted. I can read other messages on the phone fine. Looking at a message written to storage using +CMGW all I see is a blank message with the correct destination number. If I go to edit the message, the phone pops up a message saying "using unicode".

Does anyone know where I'm going wrong.

AT+CSCS? returns UCS2
AT+CSCS=? returns +CSCS: (1-16)
AT+CSMP? returns +CSMP: 16,167,0,255

I've tried changing around these settings but nothing solves the problem.

Any ideas?
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Other info:

AT+CLAC returns:

AT%C, AT&C, AT&D, AT&F, AT&G, AT&J, AT&K, AT&L, AT&M, AT&P, AT&Q, AT&R, AT&S, AT&V, AT&W, AT&Y, AT&Z, AT*C, AT*NC, AT+ANXD, AT+ANXR, AT+ANXW, AT+CAL, AT+CBC, AT+CBST, AT+CGMI, AT+CGMM, AT+CGMR, AT+CGSN, AT+CLAC, AT+CMEE, AT+CMGD, AT+CMGF, AT+CMGR, AT+CMGS, AT+CMGW, AT+CMSS, AT+CPAS, AT+CPBF, AT+CPBR, AT+CPBS, AT+CPBW, AT+CPMS, AT+CRLP, AT+CSCA, AT+CSCS, AT+CSDH, AT+CSMP, AT+CSMS, AT+CSQ, AT+FCLASS, AT+FRH, AT+FRM, AT+FRS, AT+FTH, AT+FTM, AT+FTS, AT+GCAP, AT+GMI, AT+GMM, AT+GMR, AT+IMXD, AT+IMXL, AT+IMXR, AT+IMXW, AT+INFO, AT+LOXC, AT+LOXD, AT+LOXE, AT+LOXR, AT+LOXT, AT+MEXD, AT+MEXL, AT+MEXR, AT+MEXW, AT+RCXD, AT+RCXR, AT+RCXW, AT+SCXD, AT+SCXR, AT+SCXW, AT+SYSR, AT+SYSW, AT+TOXD, AT+TOXR, AT+TOXW, AT\N, AT=, AT?, ATA, ATDT, ATD, ATE, ATH, ATI, ATL, ATM, ATO, ATP, ATQ, ATS, ATT, ATV, ATW, ATX, ATZ, AT