Quick–fire questions & answers

How do I clear cached information from Safari on iOS ?

Go to Settings > Safari > Advanced > Website Data, and tap Remove All Website Data. This still leaves some residual data that could be recovered. You could use third–party utilities such as Umate, which do this when tethered to a Mac or Windows computer and claim to be more thorough, doing a deep clean of a device before selling it. However, we haven’t tested these ourselves.

How can I receive urgent texts if Do Not Disturb is on?

Normally, Do Not Disturb silences all incoming messages. If the texts are coming from specific phone numbers — perhaps your boss, but not other colleagues — turn on Emergency Bypass for that person. Open their card in Contacts, tap Edit, then Text Tone. At the top, turn on Emergency Bypass, set the alert tone and then tap Done.

How many guests can our Wi–Fi network handle?

Each base station can connect up to 250 users, but as they share its bandwidth, performance will noticeably degrade as concurrent users rise. To deliver better service for more people, deploy multiple base stations from an Ethernet backbone. In a busy business, you might also benefit from Wi–Fi management software such as Cucumber Tony ( ctnetworks.io) or Tanaza ( tanaza.com).

Which Ethernet adapter should I add to my 2017 MacBook Pro?

Whether it uses Thunderbolt 3 or USB–C, the connection speed will be no different as both provide more bandwidth than Ethernet needs. If your Mac has only two Thunderbolt ports, look for an adapter with a passthrough power port and handy ports such as USB–A, or a small hub, for greater flexibility.