You are downloading the Guide 4 TrueCaller XAP file v22.214.171.124 for Windows Phone. Guide 4 TrueCaller is a free and useful Books & Reference app: Learn how to effectively use the truecaller ... You can now download the offline XAP file to install & try it.
Download Locations for Guide 4 TrueCaller 126.96.36.199 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Guide 4 TrueCaller XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.