I dont understand this wifi bug/glich i have experienced. Someone please elaborate

[C4L3B]

i got a Huawei Ascend y520 a couple weeks ago its running really good until i noticed wifi signal on the home screen was appearing and disappearing i didn't think much of it until it disappeared permanently and so did my Wifi connection. I fixed it eventually by rebooting my device twice. But what i want to know about that little glich i went through, a virus course or a system glich?

 

[Rukbat]

Or a microwave oven. Or you're sitting close to a neighbor's wifi router that's on the same or a nearby channel. Or a hardware or software glitch in the phone.

If it doesn't happen again, it's not something that can be diagnosed. If it does, it has to be brought to someone who can while it's not connecting.