Older or weaker devices may not be compatible with the default WiFi settings of EE Smart Hubs. Try setting up Compatible WiFi on the router under Advanced > Wireless Settings > Config > Compatible WiFi (it defaults to 2.4 GHz only & WPA2) & connect your problematic 2.4 GHz devices to that.
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To phone EE CS: Dial Freephone +44 800 079 8586 - Option 1 for Home Broadband & Home Phone or Option 2 for Mobile Phone & Mobile Broadband
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