[garfieldm89]

Is der any app to block calls from a particular number or contact?

[ttsoldier]

Get Truecaller for Android, iPhone, Nokia, Windows Phone, Blackberry

[garfieldm89]

Get Truecaller for Android, iPhone, Nokia, Windows Phone, Blackberry

How to block calls using truecaller?

[danxbike]

u cant block phone numbers with truecaller on windows phone

[kevin2577]

Apps are limited into how they can interface with the core phone functions on Windows Phone, so no app will be able to block calls. Often your wireless carrier will support network-side call blocking, usually through their website or calling support

[Loco5150]

On Ativ-S at settings there is an option for blocking phone calls. I didnt have that menu on my L920.

[userl720]

there r so many useful features windows phones don't have, i hope they make a list of it and put it in an upgrade or so.

[shankat]

there is no option for call n sms block on lumia 620

[blegs38552]

After getting the GDR2 update on my Lumia 521, I see a feature named "Call + SMS filter" under Settings. I haven't tried it, but it would seem that this is what you are looking for.