Tag: test

How to test Ethernet cables and WiFi speeds

I recently had to diagnose poor ethernet speeds in a home in Arlington, VA. A person was getting 60 Mbps/sec, certainly not bad, but far less than the paid for 100 Mbps/sec. The problem was first diagnosed by going to speed test websites: http://www.speedtest.net https://www.speakeasy.net/speedtest/ This computer had FIOS, so I plugged a testing computer
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Test RAM on a Mac

If you have new RAM in your Mac or if you are trying to diagnose weird shutdowns and problems, you should consider testing your RAM. An easy way to do so is to follow these instructions from the┬ácommand-tab article “How to Test RAM Under Mac OS X“. Download the memtest_422.zip file and install the program.
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iPhone Special Diagnostic Codes

Thanks to AppleGuy Tom for providing these codes which work on most US AT&T phones and have been tested on the iPhone. Simply type these codes as if you are calling them. *3001#12345#* -Displays the Field Test Mode, network, cell, GPRS, call, and version information. This picture shows the information from one of my cell
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