I have an iPhone 4 32gb factory unlocked that's still on a 5.0.1 untethered JB and yesterday I went to cydia and installed some updates that were available mobile substrate, activator, etc.

After they got installed I noticed 5 blank icon apps, Adsheet, Diagnostics, FieldTest and don't remember the rest.
I assume they are system apps that shouldn't show up.

Anyway I have clicked into FieldTest and now my signal bar is gone and a number is displayed instead (I assume it's DB)
I can click it and it turns into the bars but doing that all the time is extremely annoying.

Signal displaying as number instead of bars-img1211.png

Those apps disappeared after a restart of the device.
How can I fix this?