The Blankfont Symbian trojan installs corrupted font packs to the phone, causing all text to be lost. If you happened to have a mobile anti-virus installed on your phone, using it to disinfect blankfont would be exceedingly difficult, as unless you had every prompt memorized you would have no idea what you were doing.
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The Blankfont or Blankfont.A trojan runs on the Nokia SymbOS. This trojan is spread via...