The Settings app is gray and features an image of a gear. Tap "General" at the top of the third section. Scroll down to the fifth section and then tap "Accessibility" at the bottom of that section. Scroll down to the third section in the Accessibility window. Tap the "ON/OFF" toggle to the right of LED Flash for Alerts until "ON" appears in white lettering on a blue background.
Press your iPhone's "Home" button to save your changes. Your iPhone's LED screen will now flash in addition to ringing or vibrating whenever you receive a phone call. You can disable this functionality at any time by navigating back to the iPhone's Accessibility window and then tapping the "ON/OFF" toggle to the right of LED Flash for Alerts until "OFF" appears in gray lettering on a white background. Press the "Home" button to save your changes and return to your iPhone's home screen. Click thumbnail to view full-size More iPhone Articles!
Create custom vibrations for individual contacts on your iPhone so you can know who's calling you without having stop what you're doing, reach into your pocket and check your iPhone's screen. 0 of 8192 characters usedPost CommentNo HTML is allowed in comments, but URLs will be hyperlinked. Comments are not for promoting your articles or other sites.
I have an IPhone 4 with 5.1 IOS. I have followed the instructions for alerts, but for incoming calls there is no LED flash. I get flashes for alerts, but not calls. Good question. I really don't know. Sorry I couldn't help. Maybe someone will see this and be able to help. I'll also keep tinkering around with it and see if I can't change it.
I love reading about all of the little things! Except that they put shitty connectors that fray much quicker than normal "bendy" type connectors running out of this thing. Ken, that was a great breakdown of how Apple builds their products. It seems that people say that everyone shops only on price and the products that are created by apple prove that theory wrong consistently.
1 to make that happen. I've noticed some 'capacitive coupling' effects on PC power supplies generating small shocks over USB. Will the extra filtering in this case prevent little shocks, Or do all switching power supplies have high voltage 'leak' due to the capacitance across the transformer, Could you do Amazon's Kindle charger for a comparison, I suspect it's more cheaply made.
Anonymous: You get shocks from your computer because you aren't using an earthed outlet. The EMI filter in your PC PSU includes two Y class caps (the blue ones), connected from live to earth and neutral to earth. When earth ground is disconnected from the switching power supply, the Y cap connected to live brings the case of the PC to line potential.
This is at very low current so it will not hurt you, but it can zap some devices in unfortunate situations. Always plug your computer into a properly earthed outlet. With regard to "what mechanisms create audible noise", besides electromagnetically-driven motion of the wires, magnetostriction is also very important effect. This is the property where a magnetic material (such as the transformer's ferrite core) actually changes size as the magnetic field changes. This effect is unavoidable and is often the principal way that transformers create acoustic noise.
The only thing you can do is try to keep the noise from coupling to other materials nearby. I came across a Blackberry charger recently, small as a candy and was fascinated with it! Previous fascinations include a premium Nokia Charger! And I thought only I could be fascinated by such things! Can you analyze the Blackberry charger too. Here's a link from Amazon.
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