Strongest Signal SIM
The SIM that ParentShield uses was designed originally for use by emergency services and priority lone workers. It's quite special and unlike anything that many people experience.
Virtually no not-spots
ParentShield's Powerful SIM COMBINES the coverage of the three biggest networks in the UK. So if any of those have coverage - your child will have a strong signal. The SIM will roam seamlessly between networks and the coverage this achieves is little short of miraculous.