Conclusion
The Celkon A21, with its low price point of around 60 EUR at launch, represents an entry-level smartphone designed to carry out essential functions without frills. Ideal for users seeking a straightforward device for calls, texts, and basic app use, it delivered on its promises within the constraints of its budget category. Importantly, its dual SIM feature provided flexibility and value. However, given its limited performance capacity and outdated Android version, it would likely struggle to meet the expectations of today’s more demanding smartphone environment.