I do worry about the sim card being found at Kholo creek. Whilst the sim found was possibly too big for an iPhone ( they use smaller sims than regular phones), it could had been used in an old disused phone of GBC's or one of his staff or family. As a real estate principal he would probably have had a good collection of them. Seems odd to me that a sim card just happened in that location. How often would anyone remove the sim card from their phone in a public location?