A mobile shop is really two businesses sharing a counter. One sells a small number of expensive items where a single sale matters. The other sells a large number of cables, covers and chargers where volume matters.
Billing software that suits one often fits the other badly.
The accessories side is a speed problem
Accessory sales are frequent, low-value and often bundled with something else. This half of the shop has the same requirement as a kirana counter: bill it fast, and let items that are not in the list be sold without ceremony.
The handset side is a margin problem
On a high-value item, the difference between a good sale and a bad one is a small percentage of a large number. Knowing the actual cost of what you sold, per sale, is the difference between knowing your margin and estimating it.
This is where revenue reporting misleads most: a busy month of handset sales at thin margins can look better than a quiet month of accessory sales that were far more profitable.
What this trade wants that Vanij does not do
Worth being direct about, because it is the first question serious shops in this trade ask.
Vanij does not track IMEI or serial numbers against a sale. There is no field that binds a specific handset to a specific invoice. If your process depends on looking up which unit went to which customer from your billing records, Vanij will not do that today, and you should know that before installing it rather than after.
Shops handle this in different ways, commonly by writing the IMEI into the item description on the bill, which keeps it on the printed document even though it is not a searchable field. Whether that is enough depends on how you actually use it.
Warranty returns and exchanges
Returns in electronics are more common than in most retail, and they are frequently partial: an accessory back, the handset kept.
The right instrument is a credit note against the original invoice, which keeps the original sale intact and records the reversal as its own event. This matters more here than elsewhere because the amounts are large enough that a customer will remember them exactly.
Staff on the counter
Electronics shops frequently have staff billing, and purchase prices in this trade are commercially sensitive in a way they are not in a kirana store.
Being able to hand over the phone without handing over your cost prices, margins and reports is a practical requirement, not a nicety.
GST is usually not optional here
Given the ticket sizes involved, most shops in this trade are registered, and a fair number of customers want a proper tax invoice with their GSTIN on it, particularly for business purchases.
The tax split follows from where the supply goes, which for a walk-in counter is usually straightforward, and less so for anything shipped to another state.
Why revenue is the wrong number in this trade
It is worth being specific about this, because electronics is the trade where the gap between turnover and profit is widest.
A shop can move a large value of handsets at very thin margins and report an excellent month by revenue. The same shop can have a quiet month by revenue that made considerably more money, because the mix was weighted towards accessories.
If you are steering the business by the total on the sales report, you are steering by the number least connected to what you actually earned. Cost has to be recorded against products for the profit figure to mean anything, and in this trade that is not optional.
Prices move under you
Handset prices change on a schedule set by someone else. Stock bought at last month's cost is still sitting on your shelf when the price drops.
This makes cost-at-purchase, rather than current market cost, the figure that matters for knowing what a sale earned. A billing app that recomputes margin against today's price will tell you a comfortable story about stock you actually bought expensively.
It also makes knowing your ageing stock genuinely urgent, in a way it is not for a hardware shop where a box of screws holds its value indefinitely.
The practical summary for this trade is short. Record cost properly, because margin is the number that matters and it is invisible without it. Handle returns with credit notes, because the amounts are large enough that both sides will remember them. Use Staff Mode if anyone else bills, because your cost prices are commercially sensitive. And check the IMEI question against how you actually work before you commit.
How Vanij fits
Vanij tracks cost against sale price so margin is visible per bill and per period, handles returns through credit notes, and has a Staff Mode that hides purchase prices, profit, reports and settings while still allowing billing. It does not track IMEI or serial numbers, as above.
See also credit notes and CGST, SGST and IGST explained.