You can simply search smart phones or iphone
or you may refer to sub-heading 8517.13, for such products.

You may refer to sub-heading 3827.61 for such products.
If you're use EU HS Code, you may use 3827 61 00 10 which is listed in EU tariff schedule as shown below:
3827 61 00 10 R507A (containing 50 % pentafluoroethane (HFC-125) and 50 % of 1,1,1-trifluoroethane (HFC-143a))

You may refer to sub-heading 3406.00, for such products. If "candle sets" is something like "LED candle sets" heading 9405 needs to be considered.

You can simply search ultrasonic skin scrubber or you may refer to sub-heading 8543.70, for such products.

You can simply search usb charger or you may refer to sub-heading 8504.40, for such products.