Tecno Spark 40 Series Comparison: Ultra-Slim Budget Phones That Put Flagship Specs to Shame The Tecno Spark 40, Spark 40 Pro, and Spark 40 Pro+ were officially unveiled in July 2025. The Spark 40 is 7.67 mm thick and ~188 g, the Spark 40 Pro is 17 August 2025 Budget Phones · Flagship Specs · Reviews · Smartphone Comparison · Tecno
