This light came out of nowhere in my face pretty much as i'm looking down at the spot it happen to come from?

I was putting my daughters iphone speaker/(kind of looks like the size of a clock radio BUT NOT, it was a speaker n iphone charger doc, down on her night table which was plugged in but into an extension cord/that was not on bc the switch was in the off position. I want to mention this iphone speaker doc has no lights to it except the play stop FF and RE buttons and the on/off button. I place it on her table and while doing so i told her to get under the blankets and as i put in down there was a cluster of bright white lights on it that flickered for a sec n went away. My daughter saw it thru her eyes lids while her eyes were closed. Nothing we did would of caused those lights to appear out of no where from a place that did not offer any type of light source. So i'm just like wtf or can someone please tell me something logical. Bc we sat trying to logically make something logical up and couldn't.

Can a phone still ring normal like 10 times and go to their voicemail if I'm blocked?

To give a little more detail, I have an iPhone and I don't remember what the other person has but it isn't an iPhone as I always received normal green box text messages. I thought I may not have been blocked because I was in a group chat recently and saw the persons texts to the group. Tried to call and text twice. The one time I called it rang about ten times and went to their normal voicemail. The voicemail will say the the number blah blah but then I hear them say their name so it's the regular voicemail. Any thoughts? I may have been blocked over a years ago because of an argument.

Why only four digits?

I worked in electronic banking for 23 years. The protocol behind bank cards can accommodate up to eight digits. In most countries they use six digits. In the USA, and Canada they only use four.

My employer uses a four digit pin along with my electronic ID badge to open the door during off hours. My former employer (in Asia) required six digits.

Microsoft requires only four.

Why?

My bicycle combo lock has six digits. Why, because I refuse to buy one with only four digits.

The PIN on my iPhone is set to eight digits. I have no problem remembering them.