If you are facing issues importing OST contacts into iCloud, the best solution is to first convert OST files into VCF format, which is universally supported by iCloud, Android, iPhone, Gmail, and other platforms. The simplest way to achieve this is by using GanTools OST to VCF Converter, a reliable tool designed for hassle-free contacts migration. This software ensures that all contact details, such as name, phone number, email addresses, and more. With its user-friendly interface, even non-technical users can easily export bulk OST contacts into VCF without errors. Once converted, you can smoothly import the VCF files into iCloud and access your contacts seamlessly across devices. Furthermore, for testing its features, you can convert 25 OST files to VCF format.

Read more: https://www.gaintools.com/ost/vcf/