Chinese smartphone-makers OnePlus and Oppo plan to raise prices on some existing models starting next week, according to a 9to5Google report citing GizmoChina and a notice posted on Oppo’s China online store. In its notice, Oppo said it would adjust pricing after evaluating rising costs for several key components used in its mobile phones. The changes are expected to take effect around March 16 and will affect some of the company’s more affordable smartphones, as well as some OnePlus models.  Flagship devices — like those in the Find and Reno series — are not expected to be affected for now. The reported adjustments currently appear to be limited to China. The move highlights growing pressure across the smartphone supply chain as component costs climb. Analysts say prices for memory and storage chips used in phones have been rising in recent months as demand surges across the tech industry.  Much of the chip demand is coming from the rapid buildout of AI data centers, which rely on large amounts of high-performance memory.  That pressure isn’t limited to Oppo and OnePlus. Analysts say …